Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved. Bernadette wants to beat Howard in a video game

Amy and Sheldon are still feeling down about their theory being disproven, until an old VHS tape from Sheldon's past inspires the couple not to give up

Sheldon becomes jealous when Amy gets attention in the media, Raj spots Anu talking to her ex-boyfriend, and Stuart is intimidated by the idea of moving in with Denise, all of which cause mayhem when Penny and Leonard organise a paintball game

Penny's former boyfriend Zack and his wife encounter fertility problems when wanting a baby, so ask Leonard for his help. Raj attempts to patch things up with his estranged fiancee Anu

Sheldon and Amy are thrilled when their super-asymmetry theory is proved correct by two physicists from Chicago - until the experts try to exclude Amy from their Nobel Prize nomination. Bernadette experiences a big success at work and plans for Penny to become a part of it - whether she wants to or not

Sheldon is excited to help Howard and Bernadette navigate some bureaucratic paperwork, until he discovers that they are breaking the law, leaving him with a difficult choice between following the rules or staying loyal to his friends. Leonard is disappointed when he is excluded from a scientific project his friends are working on

Meri digs through boxes of her wedding memorabilia that bring up painful memories. Kody and Robyn try to improve their rhythm with a dance lesson.

Coyote Pass has finally sold and Kody, Robyn, Janelle, and Meri anxiously prepare to meet on the land to close out the deal. Maddie has her baby girl.

Amber has hundreds of tumours on her face, and sisters Cheri and Janice suffer from matching lumps. Meanwhile, Tatiana has an embarrassing bump on her rear