Operation Z.E.R.O. is the first made-for-TV movie for the animated television series Codename: Kids Next Door. It originally aired on August 11, 2006 on Cartoon Network. A widescreen DVD release is planned. As of August 2008, the release date of the DVD has not been assigned. Z.E.R.O. stands for "Zero Explanation Reveals Origins." Chronologically, the movie takes place between Seasons 5 and 6.