Capt. Lee grills the crew while investigating the cause of a gallery fire, leading to a dismissal. Chaos abounds on the boat, but the crew must unite to create a 50th birthday celebration for their charter guest. Also, a familiar face joins the boat.

Captain 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.

Kelley suffers the repercussions of stranding Dean on an isolated beach. Captain Lee makes a decision regarding the exterior team that shakes Kelley to his core. Kate grows frustrated with Emily's lack of attention to her job. Ben and Emily take their relationship to the next level and Kyle must decide whether or not to tell his girlfriend about his date with Sierra.

My Seanna struggles to pull off a successful charter on the heels of Chandler and Caroline's dramatic departures; Ross finds himself at odds with Rhylee; two new crew members arrive; an accident threatens the life of one of the deckhands.

Capt. Lee and the crew are shaken by Ashton's accident; while the deck crew is on edge, Laura struggles to fall in line with her third stew role and her boss, Kate; Adrian's decision to make comfort food for the guests backfires.

Kate deals with Laura's insubordination; Ross is at his wits' end with Rhylee's attitude; a charter guest pursues Adrian romantically; Ashton leads the crew in a musical performance for the guests; Rhylee's feelings for Tyler grow stronger.

Kate says goodbye to her girlfriend Ro while Ben makes a heartfelt gesture to a fellow crew member. The stakes are high for the Valor crew as they have to prepare the perfect surprise engagement dinner for two of their guests. Captain Lee’s patience begins to wear thin as Kelley loses control of his deck team. Kyle takes his admiration for Sierra to the next level.

Sierra spirals out of control. Emily questions if Ben is truly "just friends" with Kate. Kyle makes Ashley a very attractive offer. Kate sits Nico and Lauren down for a one-on-one chat and Ben crosses a line with Kate that changes the dynamic of their friendship forever.

Adrian is confused by Laura’s flirtatious advances after she crashes with Ashton in the crow’s nest. Meanwhile, Rhylee gets fired up when Ross tells Tyler he’d be doing him a favor by hooking up with her. As the crew wonders whether a charter guest is a member of the mob, Laura feels mistreated by Kate leading to a screaming match during dinner service.

Tyler asks out Rhylee on a date only to find out they have different plans for “their” future. Meanwhile, Ashton and Laura’s relationship grows stronger after their initial hiccups. The My Seanna crew welcomes the final Charter who look easy on paper but prove to be tough clients. While Drama unfolds between the charter guests, a spoiled Primary guest tests Kate’s limits.

Elizabeth struggles to keep her budding relationship under wraps; James finds himself at the center of the rumor mill; Izzy feels sick; when a drunk charter guest crosses the line and defies Capt. Lee, the captain is forced to lay down the law.

Captain Lee must work out how to handle Andrew when some of the crew are angry about tip money distribution; Kate is excited about a new charter guest who has special requests.

The Ohana crew struggles to pull off an elegant "White Party" for their charter guests, but they're worried the combined rage of Mother Nature and an even angrier Kate may ruin everything.

The crew are unhappy with news that Adrienne will be coming aboard as a guest; Amy feels isolated; the crew become aware of awkwardness between Kelley and Jennice.

Kelley makes a decision on how to proceed with Trevor. The new charter guests prove to be a handful with a very pampered poodle. Ben and Kate clash again, while Kelley continues to deal with Trevor's poor attitude. Meanwhile, Kelley gets a call from a loved one and Trevor proves old habits die hard during the crew's second night out.

An accident puts Nico in jeopardy; Kate tries to entertain land-locked guests; Brianna grows weary of Jen; Matt is back in hot water with another restaurant owner; Bruno tries to show Kate up with his knowledge of guest relations.

Capt. Lee tests Matt as he removes Bruno from the galley and joins the women for dinner; Jen and Kate's working relationship deteriorates; Kyle and Jen grow closer, but Kyle has ulterior motives; Jen reaches her breaking point.

Chandler is at odds with Capt. Lee and the entire Deck Team after an oversight leaves charter guests stranded at an off-boat excursion without basic amenities.

The crew tries to redeem themselves with returning charter guests after Ashton cancels a beach picnic which throws the entire boat into complete chaos. Rhylee and Ashton continue to butt heads while Tanner and Simone contemplate their relationship. Brian takes Courtney out on a date and is surprised by her reaction. The entire crew goes out to Patong for an explosive night out. After an intense night of drinking, emotions reach a new high causing Kate to make a dramatic decision.

The crew including Captain Lee are shocked to wake up and hear the shocking news that Kate quit. In Kate’s absence, Simone and Courtney struggle to maintain order in the interior. Ashton doesn’t remember his actions from the night before and has to confess to Lee that he is the reason Kate is gone. Meanwhile, Tanner is surprised to learn that he and Kate kissed. Kevin is sent spiraling when a charter guest, Justine, who is also a professional Chef, threatens to keep a close eye on him. Charter guest drama ensues when the primary’s cousin, Jamie, refuses to share her guest cabin.

Following Captain Lee and Shane’s conversation, the deck team must deal with the fallout. Rachel struggles with her long-distance relationship while James and Elizabeth’s attraction to each other becomes obvious. Tensions reach a new high after a critical mistake pushes Francesca to consider a stew replacement, and Rachel makes an impulsive decision, taking the whole crew by surprise.

Kate and Amy attack Rocky's work ethic; Eddie divulges his personal drama; Emile reveals how he handled Rocky's rejection; Deckhand Don returns; Captain Lee explains why he let Chef Leon go; Kate's accused of drinking on the job.

Tensions continue to mount between Trevor and the rest of the deck team. Kelley starts getting close to a flirty, single charter guests and Kate and Ben clash in the galley. During their first night out, tensions reach a boiling point over Trevor's antics.

Adrian's plan for a centerpiece filled with living sea creatures is nixed by Kate, leaving him frustrated. Rhylee feels awkward around Tyler, while Laura and Ashton make plans for the future. Kate forgets the primary's birthday causing the entire crew to scramble. Ross hopes to reconnect with his son's mother while Laura confronts Adrian over his inappropriate comments.

The crew bonds over a trip to an elephant sanctuary, but Kate’s attitude pushes the others to the brink. A day off at the beach club has Courtney protective over Brian. After being put in her place by Kate, Simone deals with more fires when she learns Tanner has been gossiping about their relationship. The rest of the deck crew realizes they can’t trust Rhylee with information. Captain Lee witnesses firsthand the major dysfunction of his crew after they come home from a day of drinking.