Sheldon's insomnia causes him to be lethargic right before the "Top of the Class" competition, until his friends give him several energy drinks. Unfortunately the energy drinks are far more effective than his friends planned for.

Sheldon apologizes to Imelda. She accepts his apology, however her father isn't as easy to convince. Meanwhile, Sam tries to borrow some money to bail out the floundering driving school.

Sheldon, Miriam and Mr. Lubbe make a disturbing discovery about Danny's whereabouts. When Anne confronts Jim Sheridan the driving school becomes the subject of a suspiciously timed inspection. Josh confronts Shandra at work. Nicholas Campbell and Kevin McDonald guest star.

With Danny and Miriam upset by the prospect of separating for university, Sheldon comes up with a inspired solve. Anne, Jim and Clara risk it all to save the driving school from the rival 'Killigans'. Shandra is furious when the family seem oblivious to the implications of her renewed romance with Josh.