Join the sleepover club: Frankie, Kenny, Felicity, Rosie and Lyndsey, five girls who just want to have fun – but who always end up in mischief. Inspired by their favourite girls' band, the Sleepover Club decide to form a pop group. Only, their secret rehearsal in the attic late at night doesn't go to plan – especially since Lyndsey's brothers also have pop ambitions. Pack up your sleepover kit and drop in on the fun!