Howard takes Raj along to check out the Goth dating scene. Sheldon uses chocolate as part of a behavior modification experiment on Penny.

Sheldon and Howard wager comic books over a cricket’s species. Meanwhile, a less-than-perfect romantic night agonizes Leonard and Penny.

Discovering that Leonard, Raj, and Howard fudged the results of his Arctic research expedition, a disgraced Sheldon heads home to Texas.