The remaining home cooks compete in a Mystery Box Challenge to see who will make it into the Top 10 for the season. Judges Gordon Ramsay, Joe Bastianich and Graham Elliot begin by revealing the contents of a very large Mystery Box: actress and restaurateur Eva Longoria.
Eva has handpicked the ingredients the players must use to create a stunning dish - pork tenderloin, shrimp, Mexican chocolate, chili peppers, jalapeno and an assortment of fruits and veggies. They have 60 minutes to cook with these Mexican-inspired ingredients.
Throughout the challenge, the judges and Eva taste elements of all of the cooks' dishes. When time is up, they take one last look to choose the top three.
First up is Bri, who presents her butter-and-cilantro shrimp with grilled corn salad. Gordon says the balance is wonderful and he is surprised a vegetarian can make such perfectly cooked shrimp.
The second dish is Eddie's chili pork loin with cream of corn and mango relish. Eva tells him it was the best-cooked pork dish of the challenge.
Finally, Savannah brings up her spice-crusted pork loin with creamed corn and guacamole. It is plated beautifully, and Joe enjoys the spicy flavor.
Gordon announces that Bri is the winner and will now get a huge advantage in the Elimination Test. The judges take her into the pantry. She will get to sit out the challenge, but all of her fellow players will compete.
Bri is presented with two baskets of fresh ingredients from Walmart. She can choose one player to cook with the first group of items, and the other players will use the second batch.
The first basket contains strawberries, a banana, three eggs, milk, butter, sugar, flour, gelatin, baking powder and a lemon. Competitors using these $5 worth of ingredients will have 60 minutes to cook. Joe advises that if there's someone bad at making desserts, this could knock them out of the competition.
The second group of groceries, worth $25, contains an assortment of fresh veggies and a premium choice rib eye steak. The cooks using this basket will have only 30 minutes to make a mouth-watering dish.
Bri decides to assign the steak basket to Natasha because she is a better baker and this will put her at a disadvantage. The rest of the competitors will have 60 minutes to make a dessert.
Some of the players struggle with the sweet task, while Natasha feels confident with her savory dish. When time runs out, Luca is first up to present his banana cake with pastry cream and strawberry compote. It gets good reviews from the judges.
As Lynn approaches with his baked meringue with banana puree, Gordon calls him "The King of Plating." But the judges are shocked to see the final product, and Joe asks, "Did you drive over it?" Unfortunately, the dessert doesn't taste any better than it looks, and Joe throws it in the trash.
Savannah's banana cream pie with meringue disappoints the judges too. Jessie's shortbread tart with caramelized banana is deemed delicious, but James' deep-fried banana with strawberry puree and custard does not get good reviews.
Krissi's strawberry muffins with caramelized bananas are way too dense, and they join Lynn's dessert in the trash. Last up is Natasha with her rib eye steak with sweet potato fries. It is visually beautiful and perfectly cooked.
After conferring, the judges arrive at a decision. Jessie's tart is chosen as the best dish of the night, while James, Lynn and Krissi end up at the bottom. In the most shocking elimination of the season, front-runner Lynn is sent home from the MasterChef competition after going from hero to zero.
The ten remaining home cooks arrive in Huntington Beach, California, for an epic oceanside team challenge. Judges Gordon Ramsay and Joe Bastianich arrive via jet skis, while Graham Elliot follows behind on a boogie board. In this week's challenge, the players must prepare a meal for 101 hungry surfers.
The contestants can choose from ahi tuna, cod, catfish and mahimahi to make fish tacos. They have 60 minutes in which to prep and 60 minutes to serve. They will give each surfer two identical tacos with one sauce. The surfers will vote on which taco they prefer, and the first team to reach 51 votes wins.
Because Jessie won the last challenge, she gets to pick her entire team. The remaining cooks will be her competitors. She will also decide which of those five will be the team captain. She chooses James, Eddie, Bethy and Natasha for her team. She also selects Savannah as captain of the Red Team, which includes Jordan, Krissi, Luca and Bri.
Savannah's team decides to test a beer batter before deciding on which fish to work with. Jessie's team immediately goes with the mahimahi.
On the Red Side, Jordan is making a cilantro lime sauce, while James is preparing a chipotle sauce for the Blue Team. Joe and Graham taste his first attempt at it and think it's too hot. Krissi presents her fried cod to her Red teammates, but no one likes it, and they decide to grill the fish instead.
As the surfers arrive, the Blue Team serves a grilled mahimahi taco with chipotle ranch slaw. The Red Team has made spicy blackened cod tacos with pickled onions and cabbage.
The Red Team is quickly able to serve their hungry customers, but the Blue Team runs out of fish. Still, despite a slow start, they catch up and are able to move the surfers through their line. A miscalculation on the Red Team leaves them a bit short on their final few tacos, but they do manage to complete their last few orders.
Once all the diners have tried both tacos, they line up to vote for their favorite. The Red Team is the pick of the first 22 diners, but then the Blue Team comes up from behind, collecting the next 51 votes to win the challenge.
The Red Team will now face the Pressure Test. Back at the MasterChef kitchen, the judges give the members of the winning team various baseball jerseys. As a reward for winning the challenge, the five home cooks will get to go to the All-Stars game with Graham.
Joe sends the Red Team into the wine room to decide as a team which member gets to sit this one out. While deliberating, they all name Krissi as the weakest link, and she gets into a heated argument with the other players. In the end they choose to have Jordan sit out the Pressure Test. The other four will have to cook three chicken breasts - saut?ed, Southern-fried and mozzarella-stuffed. They have 40 minutes.
When time is up, Savannah is the first to bring her chicken dishes to the judges. Her saut?ed breast is fatty, her fried chicken is raw and her stuffed version is the best of the three.
Krissi is up next. Her saut?ed dish is seasoned nicely but slightly undercooked. Graham likes her fried chicken, but her third entr?e is understuffed.
Luca overcooks his saut?ed chicken and undercooks his fried and stuffed breasts. Bri, the vegetarian, also serves the judges raw poultry.
Three of the four cooks have delivered undercooked chicken, making the judges' decision difficult. Krissi emerges as the winner, and Savannah is asked to turn in her apron and leave the competition.