Team Umizoomi is at their friend Sophia’s school to see her star in the “Butterfly Dance Show.” (And Milli has a supporting role!) But when the Umi Alarm sounds, they discover that Sophia’s butterfly costume isn’t finished! Milli, Geo and Bot navigate the halls of the school to the costume room and using their Mighty Math Powers, they work fast to put the finishing touches on the butterfly costume. But to get the costume ready in time, they’ll have to find a way to unlock Door Mouse’s supply closet door and find a missing butterfly wing before the “Butterfly Dance Show” begins