The Big Bang Theory (2007)

S11E20 The Reclusive Potential

Doctor Wolcott, a genius yet introverted scientist, extends an invitation to Sheldon for a getaway at his remote cabin, and Leonard, Raj, and Howard decide to tag along. Meanwhile, Penny and Bernadette are left to come up with a new plan when Amy expresses her discontent with the subdued bachelorette party they originally organized for her.