Ten-year-old Zac has never met his dad, who allegedly did a runner before he was born. But when his mum lets slip that he's the only man she's ever loved, Zac turns detective and, roping in his best friend, hatches a plan to find his father and give his mum the happy-ever-after she deserves. What he doesn't realize, though, is that sometimes people have good reasons for disappearing . . .