Invitation to a Dream World!? One-Night Journey Into Darkness (夢の世界へご招待！？一泊二日闇の旅 "Yume no Sekai Hego Shōtai!? Ippaku Futsuka Yami no Tabi"?), dubbed Sleepover Nightmare in the English dub, is the 40th episode of the season Futari wa Pretty Cure, and also the 40th episode of Pretty Cure franchise overall.