After a night's heavy drinking Wolfie, Ken, Tucker and Speed wake up on Salisbury Plain to fins a tank that has been left behind from an army exercise, so Wolfie decides that they should make a statement by driving it to the Houses of Parliament - which they do, only to find them empty due to the summer recess. Wolfie then hides it in Dad's garage - which does not bode well for Dad's garden gnomes.
—don @ minifie-1