Synopsis: In a disaster, most of the earth's water sources are polluted and humans are infected with a virus. Dad built the Tacheng Shelter to protect the clean water source. One day the shelter was attacked by unknown people, causing heavy casualties. Dad's life and death are unknown. In order to save his father and other people in the shelter, Dad's two daughters Leaving the sanctuary and heading to Tower City, a battle against the evil legion is about to begin...