Sheldon's childhood science show with Professor Proton is being rebooted. After unsuccessfully auditioning for the part, he goes to Wil Wheaton for acting tips for his second audition. However, Sheldon is later dismayed when Wil has somehow taken the role instead. Talking it over with Arthur in his dreams he is still upset his idol is replaced and considers Wil an enemy again. Meanwhile, Howard gets a vasectomy while Bernadette is on bed rest. Penny offers to take care of Halley for them but they insult her by saying Penny is irresponsible. Halley ends up saying her first word by calling Penny "Mama."