
Layton hears the deal: Liana for Big Alice; he agrees and the trains dock at the silo; while Layton, Ben, Till, Ruth, and Alex stew in a holding room, Josie is taken to Headwood; Milius introduces his partner in crime: Wilford.
Big Alice catches up to Snowpiercer; Milius radios them, inviting Layton over; sensing a trap, Layton and Josie sneak onto Snowpiercer; Nima is worried Layton will be gassed and attempts to disarm the Greenhouse Car.
Layton demands to use Big Alice to rescue Liana; Ruth, now mayor of New Eden, refuses because it’s the town’s power supply; Layton makes Javi jury-rig a solution, giving them three weeks of electricity.
Milius and his Animal Squad storm the train. Melanie realizes something is wrong and shuts the vault doors to the engine. But when Ben’s life is threatened, Melanie surrenders the engine.
The Snowpiercer crew marvel as a rocket shoots through the sky, crashing nearby. Melanie sends Till and Ben to investigate. Flash forward to nine months later, New Eden blooms.
It all comes to a head as old adversaries clash, with New Eden hanging in the balance.
Reunited with old friends, the train throws a party. Alliances are tested as the truth is finally revealed.
As the train detours from New Eden, an environmental catastrophe threatens everyone onboard.
Layton realises some dreams are out of reach. As the rest of the train deals with Layton’s status change, Wilford makes a staggering discovery.
As the bomber is revealed, Layton comes to terms with his past decisions before making an irreversible call.
A series of terrorist attacks threatens to derail Layton and Zarah’s big day.
Alex must finally deal with her parental figures as a track obstruction uncovers a painful past.
It’s a game of cat and mouse as both Layton and Wilford vie for the upper hand.
Layton goes on the hunt, as Wilford works to boost morale. The resistance discovers a threat that could undermine everything they’ve worked for.
While Wilford emphasizes his rule aboard his icy train, Layton’s pirate train continues its dangerous quest for warm spots, and comes across something entirely unexpected.
As the train approaches Melanie’s retrieval point, Layton leads a furious attempt to try and pick her up but not without some sacrifices.
Wilford presses forward on his endgame while those who are close with Layton grow anxious to learn their fates; Josie tests her newfound ability.
An engineering catastrophe on Snowpiercer forces Layton to make a difficult choice, one that might cost him everything.
Layton and Till investigate the murders. Wilford leads Miss Audrey down a dark path.
Melanie fights for survival in treacherous conditions, vying to do what others before her could not.
Layton and Miss Audrey make a risky play for Big Alice, but Wilford has his own plans.
As the Big Alice crew are granted shore leave on Snowpiercer, Layton and Wilford have differing opinions on the future.
Melanie embarks on her most dangerous mission yet, while Layton reckons with his personal choices.
An exchange is made between the two trains, but a far greater revelation might be just over the horizon.