‘Big Bang Theory’ Season 10 Spoilers: Episode 15 Promo Teases Leonard, Howard’s Plan To Bypass Sheldon

Leonard (Johnny Galecki) and Howard (Simon Helberg) will be plotting something against Sheldon (Jim Parsons) in “Big Bang Theory” Season 10, episode 15.

In “The Locomotion Reverberation,” Leonard and Howard realize that Sheldon is slowing down the progress of their invention. In order to move forward, they will distract Sheldon by telling him that he’s the engineer and will be the one responsible for running the locomotive. Sheldon is very happy with his new responsibility, and he becomes so motivated to finish their invention. However, an unexpected thing may happen that could make all three take a step back from their work.

Elsewhere, Bernadette (Melissa Rauch) will finally get the chance to go out with her friends. Since giving birth to Halley, Bernadette has been a hands-on mom. She typically stays at home and receives help and support from Howard. In Season 10, episode 15, Amy (Mayim Bialik) and Penny (Kaley Cuoco) will ask Bernadette to join them on their girl’s night out. Unfortunately, since Howard is also busy with his invention, Halley will be left under Raj’s (Kunal Nayyar) and Stuart’s (Kevin Sussman) care.

Raj and Stuart have been with Bernadette throughout her entire pregnancy. They were also there when she gave birth. After leaving the hospital, Raj and Stuart also went home with the Wolowitzes so they could spend more time with Halley. Most recently, Raj helped Howard fix Halley’s nursery.

Meanwhile, “Big Bang Theory” Season 10 will have a total of 24 episodes and is expected to air its finale sometime in May. However, until today, there is still no announcement on whether or not the CBS TV show will be renewed for Season 11. As of late, Cuoco, Galecki and Parsons are still in negotiations with the network.

“Big Bang Theory” Season 10 airs Thursdays at 8 p.m. EST on CBS.