Nathaniel Mayweather, a vain and self-centered young man, is invited by his father to join a lavish cruise on The Queen Catherine. However, after irritating the limousine driver assigned to take him to the harbor, Nathaniel is forced to abandon his air of superiority and trek to the ship on foot. This unexpected turn of events leads him to a charming fishing village where he meets Kenny, the lovable but clumsy cabin boy and first mate of The Filthy Whore—a vessel Nathaniel was unaware he was not meant to board.
The following morning, Captain Greybar storms into Nathaniel's quarters to deliver the unsettling news that their voyage back to land has been indefinitely postponed. Striving for freedom, Nathaniel tries to persuade the local fishermen to redirect their course to Hawaii, but the only one he manages to convince is Kenny, who reluctantly agrees to accompany him on a ridiculous escapade. Unfortunately, they soon find themselves entrapped in Hell's Bucket, a bizarre place renowned for its strange occurrences. A devastating storm claims Kenny's life, leaving the remaining crew stranded and without their reliable cabin boy.
Now entirely reliant on Nathaniel for basic tasks, Captain Greybar enlists him to shoulder more responsibilities in return for a ride back to Hawaii—an experience he hopes will transform Nathaniel's character. Yet despite his efforts, the young man's attempts are less than stellar, leading Greybar to assign him an even tougher challenge: pulling himself on a makeshift raft for an entire week.
As days turn into a grueling survival test, Nathaniel's supplies dwindle, and the harsh realities of the situation begin to take their toll. His sanity falters as he starts to believe that Kenny's ghost is haunting him; he's also haunted by an absurd cupcake that oddly spits tobacco. After a near-death experience in the ocean, Nathaniel is fortuitously rescued by Chocki, an enigmatic shark-man rumored to be the descendant of a Viking warrior and a shark.
Nearing their destination, Nathaniel’s attention is captivated by Trina, a beautiful woman swimming gracefully in the sea. Enchanted by her charm, he finds himself infatuated, but Trina rebuffs his advances time and again. It's not until they're stranded on an island that Nathaniel begins to comprehend his circumstances and the underlying layers of his own identity.
Encouraged by Greybar and Skunk to seek guidance from the mystical Calli—an entity with six arms and cerulean skin—Nathaniel embarks on a remarkable quest for self-discovery. His first encounter with Calli leads him into the realm of intimacy, invigorating his spirit and bolstering his confidence. Soon thereafter, he meets Trina again, and their instant chemistry becomes the impetus for a blossoming romance.
Meanwhile, Calli’s husband Mulligan, a colossal man, returns home to discover signs of a stranger’s presence, unwittingly unveiling his wife’s disloyalty. Consumed by rage, Mulligan seeks vengeance against the one who has betrayed him. Feeling a sense of obligation and mounting apprehension, Nathaniel decides to confess the truth to Mulligan in hopes of averting disaster. Just as Mulligan’s monumental nail clipper threatens to deliver a fatal blow, Chocki steps in to save Nathaniel from impending doom.
In the aftermath, Nathaniel parts ways with his newfound companions, who decline his invitation to work at the hotel owned by his father, William Mayweather. His erstwhile friends remind him that he is merely a "fancy lad" who belongs with his family in Hawaii, rather than mingling with individuals who have rough edges. Through these reflections, Nathaniel recognizes the flaws in his snobbish behavior, particularly as his father’s condescension towards those he deems beneath him becomes glaringly apparent.
Ultimately, Nathaniel sheds his pretentious facade and sets off in search of Trina, teaming up with her on the ill-fated The Filthy Whore.
