When DM and Penfold thwart the latest plan by Brunel he travels back in time and stops DM and Penfold from ever meeting. Back in the present DM quickly realises he's useless without his assistant as he's swamped by washing up, deluged in dirty laundry and stumped as to where he left the car keys. He must get Penfold back but how can he persuade the now billionaire playboy Penfold that he's better off as a humble assistant? DM grabs Penfold and transports them back to the moment they met and it's friendship that swings it for our duo to be reunited in the past, the present and the future!

This Monday's episode is no laughing matter, especially when Danger Mouse's uncontrollable amusement creates clown-invading chaos on Earth - can DM prevent the world from being twisted into a novelty balloon shape?