Jeff returns to Greendale to help his former law partner gather evidence for a lawsuit; thinking Jeff is planning to help save the school, Dean Pelton calls the study group back together.

Professor Hickey helps Jeff settle into his new job at Greendale; Abed convinces the study group to take a class focused on Nicolas Cage.

Holmes and Watson come face to face with Moriarty when their one-time adversary is brought in as a consultant on a kidnapping case. Meanwhile, Detective Bell continues his struggle on the road to recovery.

Joel steps in when Ed confronts Julia; in Camille's absence, Zeek makes a new friend; Carl and Sarah attend a fundraiser.

When Alex’s brother Luke is admitted to Hope Zion Hospital in critical condition, Joel and Charlie must work together to keep him alive while keeping his admittance a secret from Alex. Meanwhile, Alex figures out a way to remove a tumour from a patient pregnant with twins, while Maggie is thrown off her game by the patient’s gorgeous OB/GYN.

As Leonard tries to help Penny with a disappointment, Penny asks him a bold question about their relationship; Sheldon wants to learn how to be funny.

Another choice compilation of horsepower, tyre smoke and calamity as Jeremy Clarkson, Richard Hammond and James May engage in more high-octane horseplay.