Andy and Captain Lee celebrate "Below Deck"'s 10th anniversary as they catch up with various crew members, charter guests and celebrity fans while also reflecting on some of the most memorable highs and lows from the series.

St. David sets off for the final charter of the season. Fraser is terrified of the new bodybuilder charter guests but learns a valuable lesson about not judging a book by its cover. Ben's love life is thrown for a loop when a text message from Camille pushes him into the arms of another. Tyler bravely decides to reveal his sexuality to his mom after encouragement from Hayley. Chef Rachel reaches a new level of exhaustion, leaving her future as a yacht chef hanging in the air.

Captain Lee plays the ultimate prank on an unsuspecting guest. Chef Rachel reaches her breaking point when she challenges herself with an intricate Japanese tasting menu. Tyler wrestles with the idea of coming out to his mom, while Ross and Katie define the future of their relationship. Ben's flirtation with Leigh-Ann heats up, causing him to be torn between her and Camille. At the tip meeting, Captain Lee reveals a tip amount that shocks the entire crew.

The crew happily welcomes back Captain Lee, while new stew Leigh-Ann gets thrown into the deep end. A group of Chicago bros charter St. David, testing the crew's patience and alcohol supply. Ben finds himself in an unexpected love triangle, and Ross and Katie navigate what their yacht-mance means to them. Fraser tries to adjust to the new interior team dynamic.

Chef Rachel delivers a 24-karat dinner to remember. The crew throws the pageant queen guests an '80s party, and guest LaQuish continues to annoy the interior team with her many requests. Tony takes issue with Katie, and Ross is forced to reprimand his boat crush. Hayley celebrates her birthday on the boat, and a new stew arrives, creating quite a stir. It's a rollercoaster of emotions when the crew says goodbye to Captain Sandy and hello to Boat Daddy, Captain Lee.

Captain Sandy lets go of an integral member of the crew, leaving the team operating a man down on a charter full of beauty queens. One guest in particular takes her incessant requests to the limits, pushing Chef Rachel and the interior to their wit's end. Windy weather ruins excursion plans and the deck team has to think on their feet to come up with a creative alternative plan. Captain Lee shares big news with Captain Sandy.

Tension continues to build between Captain Sandy and Fraser. Alissa tempts Ross, which threatens to end Ross and Katie's boatmance. Crew gossip reaches an all-time high, and in response, Captain Sandy takes the crew to the beach for some team building. Fraser feels slighted by Captain Sandy, and their conflict comes to a head. Alissa's insubordination earns her a trip to the bridge.

Captain Sandy becomes increasingly annoyed with the interior and enlists Chef Rachel to help manage Fraser and his team. The crew start to see a different side of Alissa, Ross begs his way out of the doghouse once again and sparks fly as Tony reveals a hidden talent that captures the attention of newly divorced charter guests.

The crew get a day off to explore Saint Lucia on board a catamaran which takes them on a deep-sea adventure to see the Pitons up close and personal. Things get steamy between Alissa and Ross at the mud baths while Katie is left out in the cold. The crew welcome a new deck/stew, and Katie pushes Ross to move into her cabin instead of the newcomer. On the crew night out, a surprise guest shows up to dinner, shocking everyone.

The crew deals with the aftermath of Camille's firing with Ben and, surprisingly, Alissa struggling the most. Trouble is afoot for Hayley as the physical toll of being a stew wears her down. Timing proves to be Rachel's Achilles' heel as she races against the clock to deliver a multicourse meal. Capt. Sandy is forced to run a tight ship as she dives headfirst into boat wars.

Drama between Camille and Alissa reaches a breaking point and Capt. Sandy is forced to step in. A Bollywood dancing group of guests gives the crew a run for their money with their late-night drinking and partying. Flustered by the guests' many demands, Rachel's dishes are hit or miss, and her slow timing leaves the guests hungry. Crew chatter and antics lead to one crew member's demise.

Camille takes Capt. Sandy's warning seriously as she tries to turn things around in her new role as a full-time stewardess. Alissa struggles to forgive Camille for her past shortcomings. Ross confronts Tony's lack of urgency. The crew has high hopes of success for this charter, but the heat is on when the guests' strong opinions and demands test the crew's patience and Chef Rachel's abilities.

Capt. Sandy plays referee to Alissa and Camille's mounting tension. Camille complains to Capt. Sandy about being pulled in too many directions, which backfires when Capt. Sandy makes the executive decision to place Camille solely in the interior. Fraser confronts Camille about going over his head. Ross' flirtatious behavior leaves Katie upset on a crew night out. Ben and Camille take their boatmance to the next level. Capt. Sandy delivers an ultimatum to an unsuspecting crew member to shape up or ship out.

Capt. Lee's injury forces him to leave St. David and the hands on deck try to put their best foot forward for the new captain. Ross and Fraser struggle with Camille's attitude. An official promotion is given within the deck team. In the galley, Rachel is tasked with cooking a special dinner fit for an Olympian.

Camille's lack of work ethic starts to wear on the entire crew. Having to choose between Alissa and Katie, Ross decides he wants to have his cake and eat it too. Romance blossoms when Ben and Camille have an extended PDA session. Capt. Lee's injury takes a turn for the worse and he's forced to make a tough decision.

An essential missing ingredient sets up Rachel's multicourse dinner for disaster. Fraser realizes he needs a different approach to his management style after witnessing an embarrassing spat between his interior team. On deck, Ben notices a change in Tony's demeanor. Flirtations grow between Ross and Katie. Capt. Lee makes a worrisome call to his doctor as his injury progresses.

Conflict ensues in the interior department between Alissa and Camille while a romance heats up between Camille and Ben. In the galley, Rachel is forced to pivot when her dinner entree turns up rotten. The guests have a night of fun and debauchery as Ben and Tony perform a striptease for the primary. Capt. Lee faces strong winds that create challenges for the deck crew.

St. David welcomes aboard a few familiar faces, including Fraser, who has been crowned chief stew. This season, Chef Rachel makes it her mission to outdo herself, but the sheer size of St. David may work against her. The new bosun, Ross, is heavily seasoned with 10 years in yachting, but can his experience make up for his green deckhand crew? Charter guests test the crew's abilities. Capt. Lee reveals a medical condition that could affect the whole season.