RIDER TIME: Kamen Rider Decade VS Zi-O S01 E01 Decade Mansion's Death Game, Chapter 1: The FIRST Stage

Yusuke Onodera wakes up with several familiar-looking strangers in a mysterious house on an isolated island with no memory of how they all got there. A creepy figure on the television indicates they must play the games he demands... and the penalties for losing are deadly!