"The Big Bang Theory" season 10 episode 13 is about to air and it is going to be Penny and Leonard's big night. Episode 13 titled "The Romance Recalibration" tells about the couple marital problems. Leonard's video games addiction that is slowly eating away Penny's patience will be tackled in this episode.

Penny will reach the end of the rope and decides to pamper herself in a spa with Amy. Amy, Penny and Bernadette had some girl talk and Amy decided to go with Penny to comfort her as per Latin Post.

Amy is so excited to go to the spa. Her goodbye kiss with Sheldon was so steamy with the other couple watching. It will be her first day out after she moved in with Sheldon. While the two ladies are out Leonard thought of a way to remedy their situation.

The couple in trouble decides to seek Sheldon's help and asked him to make a "Couple of Contract." Of course, Sheldon is happy to extend support to the couple but he hints the couple's agreement to a divorce.

While Amy and Penny are having their pampering session, Leonard and Sheldon arrived to interrupt them. After the weekend spa session, Penny Leonard had a heart-to-heart talk and from there, the couple might rekindle their romance. They shared a kiss afterwards as per Spoilers Guide.

Meanwhile, Raj and Howard took time to fix the squeaky nursery floor so as not to disturb the sleeping baby with the annoying sound. Raj was so sweet to help take care of Bernadette's baby Hailey.

More of the gang's hilarious episodes await the viewers as the three lead stars' salary issues have been resolved. Kaley Cuoco, Johnny Galecki and Jim Parson's are now grinning from ear to ear. Watch "The Big Bang Theory" season 10 episode 13 on CBS tonight.