In “Operation: I.-S.C.R.E.A.M. (Important – Secure Creamy Refrigerated Edibles Avoid Meltdown)”, the KND catch wind of some ice cream men who refuse to give ice cream to kids, so they interrogate them and get the password to their ice cream factory, only to be in for a major surprise from their arch-nemeses, the Delightful Children From Down the Lane. In “Operation: C.A.N.N.O.N. (Cannon And Naptime Not Occurring Normally)”, Numbuh 1 leaves with his parents for a day, leaving the other KND behind. In no time, they are bombarded not only by villainous adults, but also by their major foes, the Delightful Children From Down the Lane. When the DCFDTL leave for home after this, Numbuh 5 inadvertently suggests a cannon that shoots clams to fight back. Numbuh 4 instantly dubs himself substitute leader and uses this status to get the team to build a clam cannon.