Tragedy, betrayal and a mysterious discovery fuel a woman's vengeance for the loss of her tribe and family.

Two lone female fighters who have learned to rely on no one but themselves venture into Seoul's underworld. In search of the big hit that could mean liberation from their useless husbands, these disparate women grow closer.

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.