PhD in Chemistry Elara Hayes builds a bunker, betrayed by fiancé Miles Mason and best friend Rosalie Sullivan. Driven out, she activates a secret grotto shelter with her sick mother and young sister, relying on self-developed technologies to survive. Elara Hayes joins leader Phoenix and founder Ryker to build Ark Base, taking in survivors. As Ark Base takes shape, the high-temperature apocalypse ends, the Great Freeze disaster arrives, plunging everyone into a desperate situation.
