And the river drags her down

When her older sister is found drowned in the river that cuts through their small, sleepy town, Soojin is beside herself with grief. Disregarding every rule, she uses her ancestral magic to bring Mirae back from the dead. At first, the sisters delight in their reunion, but Mirae soon grows tired of hiding from the world. She becomes restless and hungry... As the town is rocked by a series of harrowing, unusual deaths, Soojin fears the sister she brought back to life isn't the one she knew.