Superman needs to stop a giant asteroid from colliding with Earth, but when Superman collides with the asteroid, he gets amnesia. Clark goes at the Daily Planet with Lois, who…

Jamie stands up for a fellow officer, ostracized for testifying against their partner. Frank is given a difficult request by Boomer.

J.D. fears being contaminated with Hepatitis B, after a needle accidentally sticks his forearm. Meanwhile, Elliot has a hard time combining her new relationship and keeping up with studies. Turk…