Penny tags along on Sheldon’s first ever date; Wolowitz finds a new use for a robotic arm.

With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed by Penny, who hasn’t a clue what she’s in for.

With Wolowitz AWOL with one of her friends, Penny’s recruited to fill in for him on the guys’ Halo team