In 2600 Saint Katana, Matthew Toliver experiences love at first sight with the school's most enchanting young lady, an international transfer student from Portugal named Marquis Sabella.

Although Marquis clarifies earlier on that her academics is her top priority, she immediately warms up to the quality of Matthew's character and befriends him. Aside from being captivated by the Portuguese heartthrob, Matthew is the fifth member of a clique known as the Wolfpack 2600, an exceptionally talented group of high school seniors whose friendship dates back to their early childhood.

During the beginning of the school year, the Wolfpack 2600 enters one of the largest kart-racing competitions in the nation and triumphs, winning the trophy, the prize, and a year's worth of bragging rights. But as luck would have it, the victory is later negated by a technicality, leaving the Wolfpack with a bitter taste of disappointment. However, in the mid of dismay, Matthew cleverly uses his imagination and comes up with the idea of embarking on a joyride cruise, instantly sparking a pathway to redemption.

Next, they set the idea in motion through the process of transforming their go-kart into a miniature vessel, then names it the Mark 2600. Later in time, when the finishing touches are done on the newly built craft, they launch their trip, targeting the resort island of Saint Katana, with intentions of indulging in some of its various features and activities.