Operation: D.E.C.O.M.M.I.S.O.N.E.D.

Plot Summary
Right after the events of Operation: I.N.T.E.R.V.I.E.W.S., Numbuhs 1, 2, 3, 4 and 5 are now 13 years old right now and they go by their real names. Tommy, Mushi and Joey are eager to do some Kids Next Door operative training with Numbuh 362, who takes them to Kids Next Door Operative training camp. Tommy decides he doesn't wanna be Numbuh T any longer, he wants to be Numbuh 987,988 instead. Mushi wants to be Numbuh 469,470 and Joey wants to be Numbuh 897,898. She agrees with all of them and gives them their number names.

Transcript
Operation: D.E.C.O.M.M.I.S.S.I.O.N. transcript