Ian, DM's biggest fan, wins a competition to hang out with our heroes for the day. Unfortunately for Danger Mouse he must do everything 'safely' in order to avoid Ian being injured. The last few Danger Fans ended up in a bad way. It soon becomes clear that Danger Fan isn't all he seems and he's snatching and shrinking members of our show for his own collection. DM must infiltrate his greatest fan's lair to save his friends and his foes in a Lilliputian battle royale! Danger Fan is delighted to become an arch villain!