Numbahs 1, 2, 3, 4, 5 & 6 are in for their first mission together as Sector V of Kids Next Door! The adults have expanded their Adult Swim and now, they had to use the kiddie pool. Alexia, worried that something might happen there, learns that the two evil adults had been out on the hunt for all of them and is cornered by Barnacles, who appears to be infected, but is then saved by a girl, clad in dark clothing, who uses weapons, powers and skills to her advantage. Inspired to be like her, Alexia thanks the girl for saving her and helping her new friends in defeating them, with the "you're welcome" reply from her. Nigel asks the girl for her name, and she takes off the hood, saying that her name was Alicia.
