In book 2 of the Surf Soup series, Holo Holo has lost his hubcap and goes on a mission to find it. Auntie Donna thinks he is just stalling and doesn't believe him. Holo Holo drives around the island looking for his hubcap, but eventually realizes he needs to get his smog and safety check at the mechanic. However, Holo Holo runs out of gas and needs rescuing. Meanwhile, Jelly is a finalist in the science fair and time is running out. Will Holo Holo...