When a raging flood traps a researcher and her young son, a call to a crucial mission puts their escape — and the future of humanity — on the line.

When a raging flood traps a researcher and her young son, a call to a crucial mission puts their escape — and the future of humanity — on the line.

Ja-yoon is a high school student who struggles with memory loss after she endured some unknown trauma during her childhood. While trying to uncover the truth, she is unwittingly dragged into a ...