The Host / Snowpiercer

The Host

Careless American military personnel dump chemicals into South Korea's Han River. Several years later, a creature emerges from the tainted waters and sinks its ravenous jaws into local residents. When the creature abducts their daughter, a vendor and his family decide that they are the only ones who can save her.

Snowpiercer

Survivors of Earth's second Ice Age live out their days on a luxury train that ploughs through snow and ice. The train's poorest residents, who live in the squalid caboose, plan to improve their lot by taking over the engine room.