A scientist uses his invention - the "Menger Sponge" - to capture the energy of a dead child's spirit in an old building. In trying to determine why the energy of the ghost does not dissipate, the team discovers the identity and the dramatic story of the boy.
The Hotel Blackcat's owner, Mang, never leaves the counter. Guests include the immigrant worker, whore, losing-job Japanese, sex-abused man, little Lolita.... The police forces the Hotel to shut down and all guests must leave. What should they do? It's not necessary to lock each room anymore. Keep the door open, you'll find out traces imprinted with figures as well as times.
