Mallory is on a mission. Max, her brother, is spending all his time with his girlfriend and won't allow Mallory around for ANY of it. Mallory wants to know what's going on when they're together. Are Max and Winnie hatching secret plansAre they causing dangerAnd as Max's sister, doesn't she have the right to knowMallory McDonald, Super Snoop, is determined to spy on them. But when she digs up the dirt she's looking for, she'll find that snooping is messy business!