Lily has her doubts when Brad tells her about a girl he once had a relationship with at space camp named Lana. But Brad, tired of Lily thinking this, changes his Summer plans and boards a bus to space camp with a very cute, and very real, Lana.

Brad, after admitting he hooked up with his space camp buddy, Lana (guest star Mila Kunis), begs for forgiveness from Lily until he learns of her infidelity.