Masataka and jun return from shopping to find thug-like men violently knocking on their neighbor tanaka's door. suspicious, they ask tanaka about the situation, only to learn that he has joined a cult called "oga's great cause" and is unable to leave due to trouble. concerned, masataka and jun offer to help, but before they know it, their consciousness fades. they have been drugged with sleeping pills prepared by tanaka. soon, an eerie atmosphere fills the quiet room, and the cult leader, dai oga, appears.