Mirrorman Reflex

After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth.

A special-ops team is dispatched to fight supernatural beings that have taken over a European city.

Before they can complete renovations on their new country inn, a widowed father and his young daughter are visited by a strange group of tourists. He soon makes a chilling discovery: they are disaster junkies from the future who visit the past to witness history's greatest catastrophes—and his small town is their next stop.

100 years ago, titans suddenly appeared on Earth. Soon, human civilization veered on collapse due to the titans. Humans then built a giant wall to defend themselves. Within the giant walls, humans lived in peace, but, 100 years later, the giant wall is broken.