Stop-frame animation. Nestling in gently rolling hills is Timmy's nursery school, cosily housed in some old farm buildings. Complete with messy play area, story corner and garden, this is the perfect place for a young lamb to start finding his place in the world. Timmy is determined to play with Otus's new remote-controlled truck. He tries more and more ambitious stunts, until disaster strikes and the truck is broken. Harriet helps make a new one out of odds and ends, but will it match up to the original?