Bandit throws a challenge to Buster and he’s not going to shy away from it! Buster has to drive backwards all the way up to the mountains; in his journey he faces bumps and bruises all across wheelieville.

Buster heads to the carwash to get cleaned up after playing in the mud. But when he overloads it with bubble mix, the whole thing bubbles over, and he gets trapped in a big bubble!

Buster and Scout hear that there are cool and super-loud new sirens being given away on the far side of town, and race to get one each before they’re all gone. But Buster thinks he knows better than his satnav, and leads them down a long and winding.

After Digley accidentally pops Buster’s tyre in a game of tag, they visit a tyre shop to replace it. Buster tries numerous tyres but they’re either too big or too little!

Amber crashes with Buster on the mountain road and Amber loses her charge, BUT! There’s a big emergency and Amber can’t move.

When Ash goes missing in the Disco Tunnel, Buster and Scout turn detective to find her again!