In a series of interviews with the KND after they're all grown up, the former operatives are temporarily brought out of their decommissioned haze to discuss what happened during their very last mission with Numbuh one - where he disappeared and was never heard from again! It all started with a routine mission to get the Delightful Children's birthday cake, but when a mysterious boy steals it instead, he makes it available to whoever wants it, IF they can solve his 'simple' scavenger hunt first. Soon it's a mad, mad, mad, mad chase around the world as the KND, their friends, and virtually all of their enemies compete to win the yummiest cake ever
as Nigel "Numbuh One" Uno / Hoagie Pennywhistle "Numbuh Two" Gilligan Jr. / D.C.F.D.T.L. (Voice)
as Kuki "Numbuh Three" Sanban (Voice)
as Wallaby "Numbuh Four" Beatles / D.C.F.D.T.L. / Chip / Toiletnator / Mr. Fibb (Voice)
as Abigail "Numbuh Five" Lincoln / D.C.F.D.T.L. (Voice)
as Father (Voice)
as Adult Hoagie
as Adult Kuki
as Mr. Boss (Voice)
as Computer / Mrs. Uno / Numbuh 86 / Numbuh 363 (Voice)
as Stickybeard (Voice)
as Sonia / Lee (Voice)
as Mr. Dink / Knightbrace (Voice)
as Numbuh 362 (Voice)
as Mr. Uno (uncredited) (Voice)
as Lydia Gilligan (Voice)
as Nick (Voice)
as Count Spankulot (Voice)
as Robin Food (Voice)
as Cheese Shogun Roquefort (Voice)
as Numbuh 74.239 (Voice)
as Adult Numbuh 4
as Adult Numbuh 5
