When Compton Valance and his best friend Bryan Nylon discover the world's first TIME MACHINE (aka a mouldy, thirteen-week-old-cheese-and-pickled-egg sandwich), they become the most powerful boys in the universe. But how will Compton and Bryan decide to use their incredible new time-travelling powers? Will they use them for good? Will they use them for evil? Or will they just focus their efforts on perfecting a formula for the world's first pair of custard trousers? Things are about to get totally scrambled for Compton Valance.