Boxing day, late shift.
On duty: Flub, Dullas, Vince and Thrush.
The new guy: Sergeant Martin Finch.

What begins as a routine shift policing a football match rapidly descends into chaos. But how far will new guy Martin go to fit in? One thing is for certain: the lives of everyone on the Ugly Bus - and the life of a young woman drawn into their orbit - will change for ever.