Every dog has its day. And for Lineker, a happy go lucky mongrel from Peckham, the day the world ends is his finally a chance to prove to his owner just how loyal he can be. Reg, an agoraphobic writer with an obsession for nineties football, plans to wait out the impending doom in his second floor flat, hiding himself away from the riots outside. But when an abandoned orphan shows up in the stairwell of their building, Reg and Lineker must brave the outside in order to save not only the child, but themselves.