Leonard, Sheldon and Koothrappali are using Rock-Paper-Scissors-Lizard-Spock to decide what to watch on TV when they're interrupted by a phone call from Wolowitz. Wolowitz has picked up a woman, Stephanie, by telling her he can let her drive the Mars Rover; unfortunately, he drives it into a ditch and needs help. Leonard escorts Stephanie home, while Sheldon and Koothrappali help Wolowicz. Leonard and Stephanie end up making out in the car and start dating. Wolowitz is furious until they invite him on a double date with Stephanie's roommate.