يقود Jaha مورفي وأربعة آخرين عبر المنطقة الميتة أثناء بحثهم عن مدينة النور . هاريس هو قول النكات شريط جبني حول Grounders ، حصادة ، جبل الرجال ، و Arkers عندما فجأة ينفجر، يطرق الجميع قبالة أقدامهم. شخص آخر في مجموعتهم يندفع في رعب وسرعان ما تنفجر أيضًا. يدرك جاها أنهم دخلوا في منتصف حقل ألغام غير محدد.

في Mount Weather ، يدخل Emerson إلى مركز القيادة ويطلب Cage Wallace أن يتم إطلاعه على الجانحين الـ 44 الباقين الذين اختفوا. أخبر Emerson Cage أنه لديه أشخاص ينتقلون من غرفة إلى أخرى بحثًا عنهم. ويذكر أيضًا أن هناك أشخاصًا داخل Mount Weather لا يتفقون أخلاقياً مع ما يفعلونه مع الجانحين. ناقشوا استخدام حقيقة أن الجانحين قاموا بإشعاع مستوى كامل ، مما أسفر عن مقتل عشرة من جنودهم والدكتور لوريلي تسينج لطردهم. ثم ناقشوا أن جيش Grounder توقف خارج نطاق The Veil ويريد Cage أن يعرف السبب.

في معسكر Grounder ، تشدد كلارك على خطط المعركة وتخبرها Lexa أنها يجب أن ترتاح لأنها تهدر طاقتها. يقلق كلارك بشأن ما إذا كانت بيلامي ستنجح أم لا ، وتخبرها ليكسا أن هذا هو معنى أن تكون قائدة. تخبرها ليكسا أنها ولدت لتكون قائدة ، مثلها تمامًا.

في Mount Weather ، اكتشف بيلامي أن بطاقة الدخول الخاصة به قد توقفت عن العمل. يسأل Raven عبر الراديو عما إذا كان قد وجد غرفة Acid Fog حتى الآن وأخبرها أنه سيتصل بها مرة أخرى بمجرد أن يجد طريقًا آخر للدخول. أوقف Garza وحارس Mount Weather آخر بيلامي وأبلغا أنهما عثروا على الهدف الذي ليس كذلك لوفجوي . يركض بيلامي ويطارده عبر الجبل. يقترب بيلامي من الزاوية وينتظر أن يغلق جارزا قبل أن يطرد جارزا ويسرق بطاقة مفتاحه.

يعمل رافين وويك في معسكر جها على إيجاد حل لمساعدة بيلامي في تعطيل Acid Fog. يناقشون المكونات المحتملة لما يجعل Acid Fog وكيف يمكنهم تحييد هذه المكونات.

في معسكر Grounder ، يقترب Clarke من Octavia على الجانب الآخر من نار المعسكر. تواجه أوكتافيا كلارك بشأن قصف توندك وتطلب من كلارك أن تخبرها بأنها لم تكن تعلم أنه قادم. أخبرتها كلارك أنها فعلت ذلك لإنقاذ بيلامي وأخبرها أوكتافيا أن بيلامي لم تكن لتوافق على ذلك أبدًا وستجد طريقة أخرى. تخبر كلارك أوكتافيا أنها لا تستطيع إخبار أي شخص وتقول أوكتافيا إنها تعرف ؛ التحالف سوف ينكسر. قاطعتهم Lexa و Ryder ، أحد محاربيها. يخبر رايدر أوكتافيا بالذهاب لتخفيف موقع الحراسة في أقصى الجنوب. تخبرهم أوكتافيا أن إندرا تتوقع منها أن تكون في مهمة استكشافية مع لينكولن. تخبرها رايدر أن إندرا ستنضم إليها هناك قريبًا وستغادر أوكتافيا. تخبر كلارك ليكسا أن أوكتافيا لن تقول أي شيء وتقول ليكسا إنها لا تستطيع التأكد من ذلك. بعد مغادرة كلارك ، تطلب ليكسا من رايدر قتل أوكتافيا.

نجح بيلامي في العودة إلى فنسنت في عندما ظهر حارس ماونت واير. يسحب بيلامي مسدسًا نحوه ، لكن فينسينت أخبره أن الأمر على ما يرام. أخبر الحارس لي بيلامي أن بعض الحراس لا يتفقون مع كيج أيضًا. يسأل بيلامي بعد الجانحين ويخبره فينسنت أنه قد تم نقلهم إلى مناطق تم البحث عنها بالفعل لأن Cage قد أعلن عما حدث في المستوى 5. وطلب بيلامي المساعدة في الوصول إلى غرفة Acid Fog وأظهر له فينسنت تصميمات للمناطق المعدلة في جبل الطقس وما كانوا يستخدمونه لنقل الجانحين سرا. يعطيه فينسنت شعلة الأسيتيلين ويريه الطريق الذي يجب أن يسلكه.

Clarke spots Indra seated near a fire and asks her why she's not on watch with Octavia. Indra tells her she doesn't stand watch and Clarke asks where Octavia is. Indra tells her that she's with Lincoln, scouting as planned. Clarke heads off to find Octavia and spots Ryder with an arrow aimed at Octavia. Clarke points her gun at his head and tells him to stand down and come with her and she leads him away from Octavia.

In the Dead Zone, Jaha and his men are waiting for a sandstorm to clear while they sit in the middle of the minefield. Once the sand stops blowing, they see all of the footprints are gone. Jaha spots a glow from the sunlight reflecting off something in the distance and they believe they're getting closer to the City of Light.

Clarke brings Ryder back to Lexa and tells her that Octavia is not a problem. Lexa tells Ryder to stand down and sends him away. Clarke tells Lexa she can't kill anyone she doesn't trust. Lexa says yes, she can. She calls Octavia a threat and Clarke tells her that Octavia wouldn't ever endanger her brother's life. She tells Lexa that she's a liar and really does have feelings, about Gustus, about Costia, and about the people who burned in Tondc. Lexa tells Clarke that she didn't let her burn. Clarke asks for Lexa to trust her that Octavia is not a threat and warns Lexa that if she does anything to Octavia, Clarke will tell everyone about the missile.

In the Dead Zone, Jaha is slowly making his way through the minefield using his cane to detect the mines. Murphy, Craig, and Richards follow behind in Jaha's footsteps as they slowly inch their way closer to the presumed City of Light. Richards gets impatient and takes off running toward it before Jaha tackles him inches away from stepping on another landmine, saving his life.

Back in Mount Weather, Bellamy uses the acetylene torch to cut his way into the Acid Fog room through an air vent.

Wick and Raven are in Camp Jaha, listing all the acids they know and which ones seem the most likely candidates for the Acid Fog solution. Raven wants to take down the machine while Wick wants to neutralize the acid.

Bellamy grabs an emergency fire ax and uses it to bust the door lock to the Acid Fog room and jam the doors from being easily opened. He calls into Raven and begins to describe the Acid Fog room. Wick tells Bellamy to go to the monitor and asks after Monty. Bellamy starts reading off what he sees on the monitor and asks if he can just blow it up. Wick tells him that would let Mount Weather know their defenses are down while Raven tells him he would probably melt his face off.

In the Dead Zone, they've finally made it to the end of the minefield and see the sign warning of said mine field on the other end. They begin climbing the sand dunes, trying to get to the City of Light only to discover it is a giant solar panel farm. Murphy is disgusted that there is nothing there but Jaha refuses to believe that's it.

Wick and Raven continue trying to guide Bellamy through how to disable the Acid Fog while Bellamy reads them all of the menu options. When he gets to "Maintenance and Cleaning," Raven and Wick up with the idea to use the "Passivation" process to neutralize the acid. Bellamy selects it and the machine whirs to life. He watches as the pH rises from 0 (acidic) and climbs to 7 (neutral) before a message flashes that the passivation was successful. Raven and Wick accidentally hug in celebration and Bellamy tells them to send a flare to let Clarke and Lexa know the Acid Fog has been disabled.

Lexa summons Clarke to her tent to tell her that Octavia has nothing to fear from Lexa because Lexa trusts Clarke. Lexa tells her that their ways may be harsh but it is how they survive. Clarke asks if maybe they deserve more out of life than just surviving and Lexa kisses Clarke. Clarke returns the kiss before breaking away, telling Lexa that she is not ready to be with anyone. The Grounders outside raise the alert that a flare has been spotted and they prepare for battle. Lexa tells them to sound the horn and announces they are going to war.

Raven returns to the lab after shooting off the flare and begins kissing Wick. They have sex.

As the Grounder Army marches on Mount Weather, Bellamy is leaving the Acid Fog room when he notices an old manual dial built into the far back on the side of one of the huge barrels of acid. He cleans off the dial and realizes that the pH is still set to 0. The computer was wrong and the acid is not neutralized. He calls Raven on the radio, however, Cage and Emerson had intercepted the signal when they first discovered Bellamy and allowed him to think he had disabled the Acid Fog machine before cutting his communication with Raven. Cage tells them to reset the Acid Fog panel as they wait for the Grounder army to get into range. He tells Emerson to bring him the intruder.

Bellamy hears the Mount Weather Guards banging on the door to the Acid Fog room as they try to get in and he takes off running back toward the air duct he originally climbed through. Garza and five other guards chase after Bellamy and he hides behind one of the flammable oxygen tanks before making a run for the air duct as the Mount Weather Guards shoot at him. Once he is in the air duct, he shoots behind himself at the guards.

Cage tells Emerson to wait 10 more seconds before deploying the Acid Fog because he wants to make sure all of the Grounder army is inside the kill box as the army continues to march closer.

Bellamy runs out of bullets and scurries through the air duct as Emerson begins a countdown on the Acid Fog deployment. One of the guards goes after Bellamy in the air ducts while another guard checks the tanks in the Acid Fog room. When Emerson counts down to one, Cage says, "we're go for Veil." The Acid Fog machine starts to fire up just as one of the guards spots the lit acetylene torch next to the flammable oxygen tank. A massive explosion takes place, blowing out everyone and everything in the Acid Fog room and traveling through the air ducts. It takes out the guard that had followed Bellamy and the force of the explosion reaches Bellamy just as he gets to a ventilation shaft, pushing him out before the fire reaches him. Bellamy smiles with relief that he is still alive.

Emerson tells Cage the Acid Fog did not work and that there was an explosion in the Acid Fog room. Emerson says that the Reapers can't take on a force the size of the Grounder army and Cage gets upset, asking what else they have. Emerson admits they have nothing but the door left.

At Camp Jaha, Raven gets dressed while Wick tells her to stop playing games and figure things out. Raven tells him they have a war to win.

Octavia is marching through the forest with Indra and the other Grounders when Clarke walks up and tries to assign Octavia to the Rear Guard where she will be safe. Octavia tells her she doesn't take orders from Clarke; she takes them from Indra. She breaks off their friendship. Indra tells Clarke Lexa is looking for her and Clarke takes off. Indra and Octavia discuss the Tondc bombing and Indra tells Octavia that Clarke and Lexa didn't do anything; it was the Mountain Men. They sound the battle cry as they continue their march.

في المنطقة الميتة ، يفكر جحا في سبب بقاء جميع الألواح الشمسية على ما يرام عندما ينكسر بقية العالم. يقول مورفي إنه يمكنه إصلاح ذلك لأنه يرمي حجرًا على أحد الألواح الشمسية ، مما يؤدي إلى كسر بعض الزجاج. A طائرة بدون طيار تطير فجأة وإيقاف مؤقت أمامهم قبل أن تقلع عبر شاطئ البحر حيث قارب ينتظر مريح بالنسبة لهم. أخبرهم جحا أنهم سيتبعون الطائرة بدون طيار وركب الأربعة القارب وبدأوا في التجديف خلف الطائرة بدون طيار.