The tech company friends include Brandon, the founder of the company; his girlfriend, Rachel; their friend Zach; and Zach's girlfriend, Maria. While enjoying their time in Cabo, they meet a mysterious man named Alejandro who offers to take them on a cruise on his family's vintage ship.
Once on board, the friends start to notice strange things happening. The crew seems to be hiding something, and they begin to feel like they're being watched. When they discover that the ship is transporting illegal cargo, they realize that their situation is much more dangerous than they originally thought.
As tensions rise, the friends are hunted down one by one by the crew and Alejandro's family, who will stop at nothing to protect their secrets. With no way to escape and no one to turn to for help, the friends must band together and fight for their survival.
Meanwhile, the Coast Guard is alerted to the situation and send a team to confront the ship and put an end to the illegal activities once and for all. As the two groups engage in a final deadly confrontation, the friends must decide who they can trust and who is working against them in order to make it out alive.