Plot

Sheldon, Howard and Raj post an ad online to find a new girlfriend for Sheldon. Penny and Bernadette decide to spy when Amy is secretive about who she is dating.

Catching Amy kissing another man, Sheldon realizes that Amy has indeed moved on from him. As such, he decides to move on from her. As they were the ones who "found" Amy, Sheldon asks Howard and Raj to find his next girlfriend. After discussing the best approach to the task based on Sheldon's high standards, Howard thinks he has the perfect way to find that replacement to Amy. If all goes according to Howard and Raj's eventual plan, that perfect woman for Sheldon should arrive on his doorstep by the end of the evening. The questions become if any women will show up and if they do if any of them will be who Sheldon was expecting. Meanwhile, Amy is going out on a third date with Dave, the man she has been seeing. She has been short on information about Dave to Penny and Bernadette, so they decide to spy on Amy and Dave's date, knowing the restaurant where they will be dining. What they and their unexpected third see through the restaurant window may not tell the entire story of what is going-on on Amy and Dave's date.—Huggo

Penny and Leonard are eating breakfast in 4A. Leonard is making Sheldon breakfast since he is having a rough time. Amy broke his heart, the DVR didn't record the last minute of Doctor Who and a crow followed him home. Even though it is oatmeal day, Leonard made him French Toast sticks and oatmeal. Sheldon walks cheerily and greets Dr. and Mrs. Hofstadter. He announces that he is going to start looking for another woman.

Sheldon invited Howard and Raj over since they had originally found Amy for him; it is only logical for them to help him find a new female companion. He is looking for a woman who is educated, intelligent who shares his interests while retaining her own unique point of view. She has to be kind, patient and can't imagine her life without him by 10:00 PM.

Amy is trying on a new dress in 4B. She is a little shy to show her new dress to Penny and Bernadette because she is really stepping out of her comfort zone. Finally coming out in a very modest dress.

They continue to press Amy for details about her upcoming date. The guy is British, named David Gibbs (Stephen Merchant) and they are going that night to an Italian restaurant. Bernadette convinces Penny to go spy on Amy to find out more about her date. She doesn't think that she is sneaky; because she is so short it's adorable.

Working on Sheldon's new girl, Howard wants to put him on every dating site available. Sheldon is worried that his page might be answered by a computer simulating a human being, but Raj wonders if that would bother him. As an alternative, Sheldon wants the women to battle for him in a battle of wits and for the winner to come through the door, sit down next to him and quietly watch Daredevil with him. To present Sheldon as a prize, they decide to set him up on Craigslist as an intelligent Caltech professor seeking a girlfriend and that she has to solve a series of puzzles to get his contact information. Raj and Howard are actually jealous of those candidates who get to solve the puzzles and they already have seen the prize.

Leonard and Penny are walking down the stairs. Leonard thinks that they are going to see a documentary on soda can recycling, but Penny insists that they are going to meet up with Bernadette for their surveillance of Amy and her date. Leonard wants to see what the Big Soda companies don't want you to know, while Penny wants to find out who Amy is with.

Sheldon puts the Sheldon Cooper Girlfriend Challenge online. The questions require knowledge of science, fantasy, and flag facts. If she solves them, then she is intelligent, tenuous, and socially awkward and has nothing better to do on a Saturday night. That sounds too good to be true to Sheldon.

At the restaurant, Amy and Dave start talking about their previous relationships. Dave was married and left England after his divorce. He wanted children and she wanted a French pastry chef. Amy says that she had only one relationship that after five years was becoming more work than it should be. She describes him as a Caltech theoretical physicist and calls him Sheldon. Dave asks if she means Dr. Sheldon Cooper. Dave would love Sheldon's job and had been following his work for years. The date then starts going downhill as Dave spends the rest of the night asking questions about Sheldon.

Bernadette, Penny, and Leonard are spying on the date from Bernadette's car across the street. Bernadette isn't a stalker, she is just a girl with military level spy equipment who kept tabs on her boyfriends. Penny also thinks that he likes her, but he is just asking her about Sheldon. Bernadette returns with the videos she took. Leonard just wants to leave and go see the movie. Bernadette wonders why she even brought him.

The dinner date continues with more questions about Sheldon. He asks how long it took him to write a certain research paper. The answer was an hour and a half, one of her dates which is much like this one. Dave also wants to be introduced to him. He thinks that it would be weird to meet her ex-boyfriend.

Back in the car, Leonard needs a bathroom break and Bernadette hands him a bottle.

The other guys are counting down to 10:00 PM. No one arrives at the apartment. Howard remarks that it was a fun experiment, while Sheldon is convinced that someone will show up. Raj wonders if he really wants someone who is exactly like him. Opposites do attract. Sheldon comments that if that is true, he should spend his time with them.

When their dinner is over, Amy tells him that it's late and they should go. Dave apologizes that he has been stupid talking all night about her ex-boyfriend. he doesn't want her to forget to introduce him.

The girls notice that the couple under surveillance is coming toward them. Bernadette panics and backs into the car behind them which turns out to be Dave's car. "Hi, Ames!" squeaks Bernie. Amy wants to know what they are doing there and Bernadette turns the tables asking her the same thing. Leonard returns and Dave is excited to meet Dr. Leonard Hofstadter, though Leonard is reluctant to shake his hand considering where he came from.

At a minute to go, the guys count down the last sixty seconds. Sheldon is worried that it might be Jennifer Lawrence since he didn't like "The Hunger Games". Their watch ticks down and no one shows up. Raj consoles with that when it is supposed to happen, it will happen. A moment later there is a knock at the door and it is a beautiful girl named Vanessa Bennet (Lio Tipton). She is late because she was at a boring symposium on atomic spectroscopy and the puzzles saved her life. She knows Klingon, Sanskrit and facts about flags. They speak to each other in both languages and are smiling at each other.

She just had to meet him. Sheldon calls her a special lady, but since she didn't complete the challenge on time Sheldon shuts the door in her face much to the shock and disbelief of Raj and Howard. Sheldon explains that not only was she late, but she found atomic spectroscopy boring.

Finally, Amy is in her car with Dave at the end of her date and she ends things with him. After he again mentions Sheldon Cooper twice, Amy tells him to get out of her car. Title reference: Bernadette and Penny spying with Leonard on Amy and her date.