Ace builds her own skateboard, but it takes a lot of practice (and some falls) to learn to skate well--and then she builds a ramp and takes it to the park to skate with her new skateboarding friends.

Ace gets her mountain bike ready for the big bike race, but during the race Ace's bike chain comes off the sprocket, and a tire goes flat--luckily she has her tools with her to fix the problem so she can finish the race.