This episode focuses on Harrop Fold's newest arrivals and youngest students - the Year 7s - and their characterful Head of Year, no-nonsense Miss Bland. Arriving at school at the same time as the Year 7s is new teacher Mr Humphreys, who's 25. With just a year's teaching experience, at an all-girls' school, Mr Humphreys came to Harrop looking for a challenge but gets more than he bargained for when he becomes 11-year-old Tiger and 12-year-old Billy's form tutor. Best friends Tiger and Billy are messing around in lessons, bringing handcuffs into school and getting into all sorts of mischief. And on Valentine's Day love is in the air for 11-year-olds Lily and Jacob. They used to be boyfriend and girlfriend but since Lily called it off they've been calling each other names and falling out in lessons, leaving Miss Bland to pick up the pieces. But Jacob still has feelings for Lily. Can he win her back with a grand gesture?