Two filthy babes, step mum and step-daughter, on their way to a birthday party break down at the side of the roadside—Bonnie and her naughty friend aren’t waiting long before Owain the mechanic pulls up. But fixing the engine isn’t all he’s about to handle. These girls are dripping with birthday energy and ready to celebrate the dirty way. Owain gets dragged onto The Smash Bus and into a wild, wet threesome he won’t forget. Double trouble, zero shame.