Petrozza mulls over who to choose: Matt or Jen. He goes with Jen, which pleases Christina. Chef Ramsay sends the teams off to discuss the menu and get their kitchens together.

Petrozza is thrilled about his team. Bobby and Ben are ready to support their friend, but Jen is a wild card. On the other side, Matt and Christina agree to get along. Jen tells Petrozza that they need to be organized immediately if Petrozza is going to win.

The teams head to the kitchen and begin to prep the dishes. In the dining room, the construction crews are still working on the restaurants. Christina decides on some quick fixes that will have her restaurant ready. But things aren't so simple for Petrozza. John the designer has been unable to locate the person reupholstering the booths. There is nowhere for patrons to sit in Petrozza's restaurant.

With Petrozza out of the kitchen, Jen corners Chef Ramsay and asks him to write her a letter of recommendation. The Red kitchen can't believe she did this.

Christina tries to stay on top of Matt because he seems to be losing his mind again. Matt gets frustrated with Corey, and Christina fights to keep him focused. Attitude issues are happening in Petrozza's Blue kitchen as well. Jen fights against Petrozza and the team. She pouts about not making the final two. Petrozza decides that if Jen mouths off, he's going to toss her out of the kitchen.

Chef Ramsay is ready to review the dishes from Christina and Petrozza's menu. Christina's appetizer is three beef burger "sliders," and Chef suggests that she create a variety with beef, tuna and veal. He also thinks her New York strip dish should be cut into slices for better presentation.

Chef tastes Petrozza strudel, which seems to be overcooked. Petrozza's filet mignon is good, but the risotto needs work. Yet Ramsay is thrilled with Petrozza's soufflé dessert. Chef Ramsay notes that if Petrozza can pull of his more difficult menu, he could walk away the winner. Yet if Christina can enhance her dishes, she will offer a good challenge to Petrozza.

With only 30 minutes until opening, Petrozza's booths finally arrive.

Christina and Chef Ramsay walk through her completed dining room. He likes the comfortable and contemporary feel. Petrozza takes Chef Ramsay on a tour, and he enjoys the warm, rustic feel that Petrozza has created.

Minutes before opening, Chef pulls the two finalists aside and reminds them of what's at stake: the chance to work for him at The London in West Hollywood, CA. He warns that he'll be watching them very closely. Christina and Petrozza head back to the kitchens and get their teams fired up.

Chef Ramsay summons Jean-Phillipe to open. The final service of Hell's Kitchen begins.

The first orders come into Christina's kitchen and she barks out the dishes. The Red team jumps into action. Jean-Phillipe hands Petrozza a stack of orders and the Blue team starts with a bold, "Yes Chef!"

Chef Ramsay paces between kitchens, and Christina's Red team is off to a strong start. Petrozza steps up and maintains a high level of quality with his appetizers. Bobby is happy to be helping Petrozza. The pressure begins to build in Christina's kitchen as orders back up. Matt moves to help Louross with salads, but that may have made things worse. Matt is frantic and making a mess.

Petrozza's team has delivered appetizers to over half of his customers, but they're about to hit a snag. They have run out of cheese for the salads. Petrozza starts to spin and the kitchen is behind on appetizers. Ramsay threatens to stop Petrozza's service if he doesn't recover. Petrozza heads to Bobby, who bounces back with a risotto. The team recovers and the risotto fix is a big success in the dining room.

Jean-Phillipe returns two dishes to Christina's window. The steaks are lukewarm, and she orders up another steak dish. Corey jumps on Matt to get him moving, and the Red team scrambles to stay on their feet. Chef Ramsay is amazed as the Red team is able to catch up on the orders.

Meanwhile, in Petrozza's restaurant, the customers are waiting... and waiting... and waiting for food. Chef tells Petrozza to ask for help because he can't get all the food out himself. Ben and Jen step up to assist him.

Matt delivers raw fish to Christina, and she has to send it back. She feels like she has to be a babysitter to Matt, and Matt starts to crack again. He mumbles under his breath and Louross tries to keep Matt focused. Chef Ramsay has had enough and tells Matt to shut up and keep working.

Petrozza battles with Jen's attitude. She is shutting down because she can't stay focused and isn't delivering Petrozza one single good onion ring. Ramsay steps up to defend Petrozza, saying he needs to keep on Jen because she'll sabotage everything.

Matt delivers another raw fish dish, and Christina feels like Matt could ruin her chances at winning the prize. Chef tells Christina she needs to put Matt in line or Ramsay will take over her kitchen. Matt continues to complain under his breath. Matt finally delivers a properly cooked fish and Christina tries to encourage Matt to stay up on his game.

Petrozza's team moves onto their final course with Christina's team close behind. Desserts from both teams are flying out the kitchen and customers are enjoying them. When the last plates leave the window, Christina and Petrozza congratulate each other on finishing the service.

When it's all done, Ramsay rounds up the teams in the kitchen for the last time. He congratulates Petrozza and Christina on a job well done. He commends the teams on there being more highs than lows. Chef tells Petrozza and Christina to say goodbye to their teams and head back upstairs to the dorm.

The two wait nervously in the dorms for Ramsay to make his decision. Chef sits inside his office, going over comment cards and thinking about how each performed inside the kitchen. Chef Ramsay finally summons them back to his office. He admits that his decision has been agonizing because they are two very worthy and talented finalists.

Chef Ramsay announces that it is time to reveal the winner. He asks them to step up to the doors overlooking Hell's Kitchen. Petrozza and Christina stand side by side and wish each other luck. The person whose door opens will be the new executive chef at Chef Ramsay's restaurant. The two place their hands on the door.

Outside, the friends and families of the contestants wait in the dining room.

Ramsay counts to three, and the two turn the handles.

Christina's door opens. The crowd cheers and Christina's mom cries in joy. Confetti falls and everyone celebrates. Upstairs, Chef Ramsay congratulates Petrozza, and the two head downstairs to meet Christina. Although Christina had the least amount of experience, Chef saw the most amount of potential in her. He tosses his pencil down. It's time for him to get out of Hell's Kitchen.

Christina is the winner of Hell's Kitchen Season Four and the new chef on staff at Gordon Ramsay at The London in West Hollywood, CA.