Yoshimi Matsubara (Hitomi Kuroki), who, in the midst of an unpleasant divorce, moves to an eerie, run-down apartment building with her young daughter, Ikuko (Rio Kanno). The ceiling of their apartment has a dark and active leak. Yoshimi discovers that the upstairs apartment, which appears to be the source of the leak, was formerly the home of a deceased young girl named Mitsuko Kawai.