DJ has a damaged shovel but refuses help, wanting to do everything herself. She finally learns that it's okay to ask for help and that friends help friends.
Dex brags about how he's having a big birthday bash, and only cool trucks are invited, not the regular truck pals. When it turns out that no cool trucks shows up to his party, the truck pals throw him a surprise.
Finley decides that there's not enough adventure in his town and hits the open road, then winds up getting scared and homesick and appreciating what he left behind.
Gorby feels he doesn't measure up to his gleaming, award-winning cousin -- until he realizes he's special and good enough and doesn't have to compare himself to anyone.