Ren Fujitora, one of many children of the Enokida foster home, was all set to leave for university, when he and his entire foster family are transported to the magical realm of Rayvon after opening a mysterious box. But that's not all, each of them are wearing embarassing animal onesies! Trying to keep a low profile, they are soon dragged into a conflict that will test each of them in ways they could not imagine.