Codename: Family Next Door

Codename: Family Next Door is an American animated television series for Cartoon Network. The series is a sequel to Mr. Warburton's 2002 animated series, Codename: Kids Next Door.

Plot synopsis
In Codename: Kids Next Door, the series revolves around the adventure of five kids, codenamed "Numbuhs 1 through 5" of Sector V of a worldwide organization of children battling adult tyranny with advanced technology called the Kids Next Door. When Nigel Uno, the former leader of Sector V known as Numbuh 1, was chosen to join the Galactic Kids Next Door at the end of the series, he was forced to leave Earth to fight adulthood throughout the universe. In Codename: Family Next Door, the former members of Sector V are now adults and started their own families; with Hoagie Gilligan Jr. and Abigail Lincoln (Numbuhs 2 & 5) married, and Kuki Sanban and Wallabee Beetles (Numbuhs 3 & 4) married.

The rules of the Kids Next Door states that when an operative turns 13-years-old, they are decommissioned and their memories of being an operative are erased. However, the best operatives get to be chosen to remain KND in secret, and become undercover Teen & Adult operatives. So when Numbuh 5 became Supreme Leader, she used her connections to prevent herself and her old sector from having their memories wiped. But in the present, a mystery villain is hunting over-aged undercover operatives, including the original Sector V. If anyone else knows about the Teen & Adult members, it'll threw everything into chaos. Now Numbuhs 2 through 5 must seek the aid of the few Kids Next Door who do know their secret, as well as their own children, to uncover this new evil before they destroy more Kids Next Door of all ages.