On an assignment, journalist Naoko Tomioka visits a secluded house previously inhabited by Gouda, a deceased artist with a cult following. At the house, Naoko interviews its six inhabitants, all family and friends of Gouda's, all with mysterious pasts. Many of them refuse to participate, but Naoko finds an area of the house that was Gouda's secret hiding spot – the attic. Soon, she discovers that from inside the attic, one can uncover the darkest secrets of the people below.