Spencer makes a birthday gift for Carly that sets her bedroom on fire.

Spencer gets addicted to pranking. The rest of the gang tries to come up with a plan to make him stop, which turns out to be harder than expected.

Carly, Sam, and Freddie sell a popular line of penny T-shirts while Spencer dates a girl from Uzbekistan who doesn't speak English.

When Brad and Freddie start hanging out, Sam wants to hang out with them too. After Freddie uses the app, it says that Sam is "in love." So Carly helps Freddie to hook Sam and Brad up. Meanwhile, Carly and Gibby do experiments on Spencer.