Dan volunteers to look after his pupil Dennis for the weekend after the boy receives sad news about his family, though he is primarily motivated with impressing Miss Lipsey. The lad is subjected to reliving the childhood years of Jo, Brian and Dan by way of a bike trip, a game of knock down ginger and one of their own devising called furry periscope. Will Dennis have enough fun to wow the headmistress with a retelling of Dan's big-hearted gesture? (thetvdb.com)