Codename: Kids Next Door (2002)

S4E19 Operation L.O.V.E.

Numbuh 3 takes center stage in a romantic musical reminiscent of "West Side Story." However, chaos ensues when Numbuh 4 crashes the performance, sparking an all-out conflict between the Kids Next Door and the Delightful Children From Down the Lane that turns their theatrical rivalry into a real-life showdown.