Frankie with her four best friends Fliss, Kenny, Lyndz and Rosie are part of the sleepover club, where each member holds sleepovers. The five-members strong club deals with every-day problems. The main antagonists are called the M&Ms, made up of three members (Matthew, Marco and Michael) who always try to interfere with the girls' lives (or whose lives are interfered with by the SOC). The club is also targeted by two posh girls Sara and Alana who always try to join the club or disband it.