Capt. Jason reprimands the deck crew for their mistake; the final night of the charter season sparks an unlikely hook up and argument between crew members.

Bri and Harry try to define their relationship; the crew picks up their last charter guests who can't keep their food down during a swelly charter; during the last beach excursion, the deck team commits their biggest error of the season.

Chef Tzarina feels the heat as Anthony begins to chafe under her direction; a near collision while docking tests Capt. Jason's patience; Lara continues to adjust to the sprawling layout of Katina; Harry finds himself in a familiar love triangle.

Wihan, in love, writes a heartfelt letter; Harry attempts to rekindle romance with Bri; Lara's team criticisms irritate Wihan, with silver hot pants becoming the breaking point.

Wihan's attention shifts to a new flame while Lara gets frustrated with his carefree attitude; an overlooked hazard causes Johnny and a charter guest to flip a jet ski in dangerously shallow waters.

Captain Jason makes an unpopular decision to fire a deckhand; a Lead Deckhand joins the boat; Margot struggles with a challenge on her first attempt at service; a charter guest experiences a medical emergency.

The charter guests continue to be on edge with each other; a new stew comes aboard, giving the interior relief while captivating the deck team; a crew member over-commits to the Cancana surprise kiss threatens to ruin the party.

Heavy wind and rain threaten to drown a difficult beach picnic; a stew takes liberties with her break time; the guests experience a dinner fit for a god; on a night out, romantic entanglements get knotty when a surprising new hookup happens.

Harry makes his move with Brianna, but just as sparks begin to fly, he suffers an injury; Wihan ignites tension within the ranks when he oversteps Lara's department; things heat up in the galley as Anthony contemplates leaving his position.

Benny struggles to stay motivated on deck, while Jamie tries to keep his team in line; Ryan and Aesha's galley communication comes to a head when the guests aren't ready for service; the crew comes together to throw a vow renewal ceremony.

A love pentagon takes shape as crew romances heat up in multiple directions, and a personality conflict on the interior intensifies. One of the deckhands falls behind, and a dinner service for the guests goes awry when their preferences are overlooked.

Anthony puts Tzarina in a bind causing her to crack under pressure; Harry's fate on Katina is determined after knowing the extent of his injury; Marina asks Wihan on a date, sparking tension between her and Tzarina.

Captain Jason continues to notice Culver’s lack of initiative; Brittini calls out a double standard.

A new charter season gets underway in Cairns, Australia's gateway to the Great Barrier Reef; the interior and exterior departments start man-down as the crew scrambles to cater to party-hearty guests.

After a surprising hookup, the chef ices people out. A family comes aboard and enjoys a meal in a remote location. The tender nearly capsizes as the crew races to free it from a disappearing island. A mistake on deck causes the boat to hit the dock.

The crew puts together "Fear Factor" inspired games for the charter guests; Tzarina and Lara confront Wihan after a messy beach excursion; the deck crew starts to question Wihan's leadership and Jason gets involved.

Harry struggles with his new responsibilities on deck; the interior tries to keep it together in housekeeping; Tzarina attempts to take control of her department; a sudden lightning storm threatens Circus Night for the guests.

Captain Jason Chambers introduces a world of underwater adventure to charter guests along the world-famous Great Barrier Reef in Australia; while first-time bosun Jamie faces some initial challenges, new chief stew Aesha clashes with an ornery chef.

Aesha and Ryan's opposing views on service are tested during an explosive lunch; Brittini stands up for herself on deck, while Benny takes issue working in the anchor locker; Captain Jason introduces a most improved award that isn't well received.

The crew unravels as demanding charter guests push them to their limits. Jamie and Tumi disagree over Culver's actions. In an attempt to keep Captain Jason happy, Jamie tries to take control of his deck team.

Jamie puts Brittini on the night shift after Benny doesn't pull his weight; Aesha confronts Magda and Ryan for talking behind her back; Jamie is at his wit's end with Benny's behaviour and wants him fired.

The Thalassa crew throws a vow ceremony for the guests; Culver breaks the captain’s big rule.

A complicated love triangle threatens to make things awkward on deck. The CEO is back for another round of fun. The guests have an icy request, and when a deck crew member overlooks his duties, one of the guests gets a cutting surprise.

The deck team reels after a docking debacle; the Chief Stew gets a surprise visit on a day off; a deckhand unhappily gets friend-zoned; a forbidden relationship becomes too tempting to ignore; a disastrous mistake endangers the boat.

A deckhand's fate is up in the air after an egregious error; the 2nd Officer tries to escape a rocky romantic past; the Captain reluctantly bares all for a budgie breakfast.