Sheldon and Amy’s honeymoon runs aground in New York, while Penny and Leonard discover they are uncomfortably similar to Amy’s parents.

Sheldon and Amy drive themselves crazy trying to figure out what 'perfect gift' Leonard and Penny got them for their wedding.

Howard and Bernadette’s life gets complicated when Stuart starts bringing his new girlfriend home. Meanwhile, Penny and Leonard talk about starting a new family, as Raj explores an arranged marriage.

Sheldon won’t tell anyone why he has never mentioned Tam, his childhood best friend. Meanwhile, Bernadette and Penny take out Raj’s fiancée, Anu, for dinner to get all the details on her.

Sheldon goes to great lengths to ensure Amy is available to work with him on super-asymmetry. Meanwhile, Raj doesn't want Howard to join him in hosting a show at the planetarium.