Clarke , Bellamy og Jordan deler Montys videobesked om "Planet Alpha" med et par udvalgte medlemmer af deres gruppe, herunder John Murphy , Emori , Echo , Raven Reyes , Miles Shaw og Abby Griffin . Clarke er glad for, at de overlevede, men Abby fortryder, fordi de skal rette op for at tjene deres menneskelighed tilbage. Raven stormer afsted, vred ikke kun på grund af Monty og Harpers død, men også fordi Clarke og Abby mistede begge deres menneskelighed og lod hende torturere.

Alle i gruppen mødes i messehallen for at planlægge deres landingssted. Jordan giver Abby nogle af Montys alger, fordi den har medicinske egenskaber, der kan hjælpe med at redde Kane . Abby gør at redde Kane hendes første prioritet. Bellamy og Clarke planlægger at nærme sig deres nye bolig fredeligt denne gang ved hjælp af gasgranater og stødbatoner. De er enige om at bruge våben som en sidste udvej. Når Echo foreslår, at de skal bringe deres bedste krigere, siger Bellamy, at de skal lade Octavia stå fastfrosset et stykke tid, fordi hun sandsynligvis skyder først og ødelægger deres fredsplaner. Raven vil gå til jorden, men Bellamy vil have hende til at forblive i moderskibet, mens de går med Shaw, da hun er den eneste anden pilot.

Da transportskibet flyver mod den nye verden , ser Raven ud af vinduet. Men de mister snart radiokommunikation. Raven beder Jordan om at flytte skibet til et tættere kredsløb, så hun kan genoprette kommunikationen. Mens han ser på det, gør Jordan en opdagelse af, at "Alpha Planet" ikke rigtig er en planet - det er en måne! 

Efter landing på jorden er gruppen begejstret for at opdage, at luften er åndbar, og strålingsniveauerne er gode. De begynder at udforske. De støder på en lille sø, og Murphy hopper ind for at svømme og bekræfter, at vandet også er sikkert. Senere slapper gruppen af ​​taler om deres nye status som udlændinge. Clarke fortæller dem, at hun fortryder sit forræderi og ønsker, at hun kunne tage det tilbage. Shaw fortæller hende, at hun kan sone gennem sine handlinger.

Når en formørkelse nærmer sig, bemærker gruppen, at en fejl, de havde fanget i en krukke, bliver ekstremt voldsom. Pludselig nærmer en kæmpe sværm af insekter dem med høj hastighed. De løber for at søge ly, mens de bruger ildblus til at skræmme fejlene væk. Snart nærmer de sig et tårn, der kontrollerer et strålingshegn. Da strålingshegnet dræber bugs, forsøger banden at gå inde i hegnet. Mens han prøver at redde Murphy, løber Shaw ved et uheld gennem strålingsbarrieren og bliver brændt af strålingen. Clarke bemærker, at de er strålingstype chokere, og hun kan gå igennem dem, fordi hun har natblod . Hun går gennem barriererne og deaktiverer tårnet midlertidigt for at lade resten af ​​gruppen komme ind.

De prøver at redde Shaw, men det er for sent - han fik for meget stråling. Jackson forsøger at putte natblodsserum i ham, men Shaw fortæller ham ikke at spilde det. Inden hun dør, beder Shaw dem om at fortælle Raven, at hun fortjener lykke, selvom hun ikke tror, ​​hun gør det. Miles Shaw dør kort tid efter.

Back on the mothership, Abby tells Niylah that she needs blood donations from anyone she can to save Kane. Since Skaikru are universal blood donors, Niylah starts to wake them up to get blood. Meanwhile, Abby notices that the drugs are missing. She figures out that Raven took them. She goes to get them back but Raven confronts her for letting addiction get the best of her. Raven always looked up to Abby as a mother figure ever since her mother died of overdosing. When Abby tries to imply that she's better than that, Raven guilts her by mentioning that at least her mother didn't torture her. Raven angrily gives in and lets Abby have the pills.

While getting blood, Niylah wakes up Octavia, who asks where her brother is and inquires to know what's going on. With enough blood, Abby finally manages to wake Kane up. Abby shows Kane the new planet through the window on Eligius IV. Kane tells Abby that everything they've done led to this moment; and it was worth it.

Suddenly, Octavia interrupts them and angrily confronts them for their betrayal. She blames Kane for betraying them by following Diyoza and causing so many of Wonkru to die in the gorge, including Ethan, who was the first to be shot. Kane retaliates by saying that if she didn't burn the Hydrofarm, they wouldn't have lost so many people. As the tension rises, Kane's still weak blood system gives up and he starts starts vomiting blood. Octavia helps Abby put Kane in bed. On realizing that Kane won't recover, Octavia says "Your fight is over" and leaves. Abby doesn't want to give up on Kane yet. So, she puts him back into Cryosleep. She asks Jordan to make more algae. Abby also makes a bold move by surrendering the pills to Raven. Back on the "new planet," the group continues to explore the area inside the radiation shield while waiting for Raven to contact them. With Shaw dead, they assign Emori as their designated pilot, since Raven taught her some basics. As they climb a hill, they notice a castle at the top. They get closer and are surprised to find no one. They start looking at the buildings. Emori finds a flag with the A.L.I.E.'s infinity symbol on it and Clarke confirms that Becca did the tech for Eligius Corporation. Clarke explores more houses and finds people in photographs standing by an American flag. Murphy finds a music player and turns it on.

Clarke finds a book called "Red Sun Rising." They start reading the book and assume that it's a nursery rhyme. It says that once the stars align, and the forest wakes, it's time to run away. They are interrupted when Murphy yells after noticing their transport ship flying away. Not only do they have no pilot, but now they don't have a ship either.

Pludselig begynder Emori at angribe Murphy ud af ingenting. Gruppen kommer hurtigt for at redde Murphy. Clarke bemærker, at Emori blev voldelig under den røde sol (formørkelse) på en måde, der ligner det, der er afbildet i "Red Sun Rising" -bogen. Hun kommer til den konklusion, at bogen ikke er et børnerim - det er en advarsel. Hun regner ud, at der er noget i luften, der påvirker folks adfærd og vender dem mod hinanden.