It's Valentine's Day and while attempting to sabotage Abercrombie's zero tolerance to romance, the trio discover a portal to the inside the headmaster's brain. What at first seems like the best thing ever soon turns into a nightmare as the bullies gain control of the headmaster. The only way to stop them is to test the old adage - the heart rules the head.
When Mitchell is issued a strange simulation baby doll to teach him responsibility, his first reaction is to bin it. But it keeps coming back and he soon realises that the doll is alive. From apathy to panic, and finally to parenthood, Mitchell soon appreciates that having Mitchell Junior around might not be so bad after all.