Numbuhs 2–5 as adults are recommissioned by an unnamed, unseen interviewer and tell him what happened to Numbuh 1 on their final mission. They are told by the interviewer that the effects of decommissioning have been temporarily reversed so they could be interviewed regarding their final mission, in which Sector V and the younger Sector W compete in a scavenger hunt, alongside most of the series' characters, to win the Delightful Children's birthday cake. Though behind for most of the hunt, Sector V must aid Sector W when they go too far and try to steal Father's pipe.