It's time for Fergus and his Hercules' Hopefuls teammates to go to the District Championships, where they're determined to beat the superior Wallace's Winners, even though their second-hand junk shops bikes are proving to be no match for the flashy new Sullivan Swifts that Wesley Wallace and his teammates have got free from their coach, Choppy Wallace. Grandpa tells them not to worry about it, but it's hard not to compare when your gears keep grinding. What's more, Fergus thinks that his mum is falling in love with someone . . . and when Choppy Wallace offers the Hercules' Hopefuls four brand-new Sullivan Swifts, Fergus and Daisy suspect that the worst possible thing could be happening - is Mum's fancy man Wesley Wallace's dad? Could Fergus and Wesley become stepbrothers? Disaster!