Izzy Gizmo has been invited to Technoff Isle's Genius Convention where the inventor of the best machine will win coveted admittance to the Genius Guild. But with fearsome foe Abi von Lavish getting the best of her at every turn, how can Izzy and Fixer come up with the winning invention? Much-loved heroine Izzy Gizmo returns (together with Grandpa and Fixer) in a wonderfully exuberant story that has serious points to make about the importance of make do and mend.