Ant and Dec reunite with Cat Deeley to look back on making the Saturday morning kids' show, revisiting the studio where the series was filmed and reminiscing about their favourite segments and running gags, including Wonky Donkey, Chums, and Dec's obsession with Sabrina the Teenage Witch. Featuring classic clips and contributions from guests and celebrity fans, including Kylie Minogue, Stephen Mulhern, Fleur East and Scarlett Moffatt.