Dennis Kim and Eric Gablehauser enter 4A to speak to Sheldon. While Amy and Penny work together to help Penny pass her medical semester exam. Leonard and Bernadette start creating ideas with their hologram discovery. Howard spies on Leonard & Bernadette's discovery. Stuart and Alex have a trivia contest with Emily and Raj.
Dennis Kim and Eric Gablehauser enter 4A to speak to Sheldon. Sheldon is surprised and teases Dennis but then Eric says Dennis needs help with Physics, so Sheldon helps him. While Amy and Penny work together to help Penny pass her medical semester exam. Leonard and Bernadette start creating ideas with their hologram discovery. Howard spies on Leonard & Bernadette's discovery. Stuart and Alex have a trivia contest with Emily and Raj. Dennis and Sheldon are talking about Physics, but then he tells Sheldon he tricked Dr. Eric Gablehauser so he can get to Sheldon. Dennis and Sheldon have a trivia contest about Physics. Leonard and Bernadette are working on their experiment while trying to find out exactly how they made the hologram, but then when Leonard puts his phone on the hologram it simulates his phone screen and Leonard can use his phone using the hologram. Bernadette then puts her hand on Leonard's phone and it creates a hologram of Bernadette's hand touching the phone. The two decide to call Howard for engineering help, and he comes in to help perfect this invention. President Siebert comes in to Leonard & Bernadette's lab and he is impressed by the hologram they have created. Dennis has beaten Sheldon in every question of the trivia. Raj and Emily beat Stuart and Alex in the trivia contest. But then Raj gets a notification on his phone that says he can't get tickets to comic con, so the 4 decide to start their own convention. Back in the lab, Leonard and Bernadette are talking to President Siebert about their accomplishment, and he says any money that Leonard and Bernadette make, the university gets 20% of it. Leonard and Bernadette agree. Howard then finally finds out how it the hologram was made and he then says it's basically a smart & interactive holographic projector. Leonard then puts his hand on the platform of the product and then when Bernadette touches the holographic version of his hand, a holographic version of her hand touches Leonard's real hand. In Penny's apartment, Amy is helping Penny study for her medical class, but then the two get tired and when they try and drink coffee they accidentally drink Alcohol. In 4A, Sheldon is bragging to Dennis about his idea towards proving the theory of the Big Bang.