Liam Digby is tall. Very tall. Unusually tall for a twelve year-old boy. Everyone thinks Liam's too big to be a little boy any more, but he's not old enough to be a grown-up either. When he enters a Greatest Dad Ever contest to win himself and his friend, Florida, a trip of a lifetime to Infinity Park in China, he doesn't expect to win. But he is soon to discover that being a dad is hard work especially when you're piloting a rocket at the same time!