"The Big Bang Theory" Season 10 Episode 15 might be one of the episodes viewers wouldn't want to miss. Sources revealed that the upcoming episode would show Leonard and Howard doing their best to plot an evil scheme against the show's main character, Sheldon Cooper.

 "The Big Bang Theory" Season 10 Episode 15: Sheldon Cooper Suffers Difficulties, Leonard And Howard Blamed?

As per sources, it was revealed that the Locomotion Reverberation determined Sheldon Cooper as the ultimate reason behind the snail-paced invention. With this, Leonard and Howard would try to ruin the life of the show's main character. Sources claim that this plan was made because they wanted Sheldon to leave the project, without the thoughts of blaming the two.

Reports suggest that they would try to give the manager of engineering position to Sheldon. With this, the character would then accept the position and would try to lead the locomotive process. As he was happy doing his job, a failure would come up that will ultimately boil down to him.

"The Big Bang Theory" Season 10 Episode 15: Bernadette Parties, Ray And Stuart Tries To Babysit

Other than that, the show's Episode 15 would also give a sneak peek of Bernadette's relaxation. The character would try to go on a party after taking care of her child Halley and staying home all her life. Bernadette would be accompanied by her friends Amy and Penny.

As this happens, Ray and Stuart would try to do the usual routine of babysitting. The two would try to look after Halley while Bernadette tries to put all her anxieties away while partying.

"Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system. Also, Penny and Amy take Bernadette out for the night, leaving Raj and Stuart to care for baby Halley," the synopsis reads.

"The Big Bang Theory" Season 10 Episode 15 airs on Feb. 9, 2017, only on CBS.