Ep 9. The Platonic Permutation

In season 9 episode 9 of The Big Bang Theory, titled "The Platonic Permutation," the gang prepares for their first Thanksgiving as a married couple. Amy and Sheldon decide to spend their Thanksgiving separately, with Sheldon celebrating the holiday on a train trip he's been wanting to take, and Amy joining her co-workers for a traditional holiday celebration. Howard and Bernadette, who are expecting their first child, choose to host Thanksgiving at their home.

As Sheldon boards the train, he encounters a young girl who will ultimately teach him a valuable lesson about himself and his relationship with Amy. Meanwhile, Amy's Thanksgiving with her co-workers takes a surprising turn when her colleague Bert introduces her to a handsome young man.

Back at Howard and Bernadette's house, the couple becomes anxious as they eagerly await the arrival of their guests. They spend their time preparing the meal and obsessing over every detail to ensure that it's perfect. But when their guests finally arrive, they realize that their perfect plan may not go as smoothly as they'd hoped.

Throughout the episode, each character reflects on what they're thankful for, and the importance of the relationships they've built with each other. "The Platonic Permutation" is a heartwarming episode that shows the importance of friendship, family, and gratitude during the holiday season.