Two new main characters appear in New season the train owner Mr Wilford and Melane’s daughter Alex. One crazy plan - recolonization on Earth as signs showing global warming. Two engines, Snow-piercer and Big Alice now communicate, which lead more possibilities for the story lines. The story now splits into two parts on-train and off rails. The series spends one episode deviating from the main story and talks about how the train debuted. The one more about Melane’s demise off the rail. With more horror grow among crews in Snow-piercer, greedy and chaos divided the train further.