On vacation in Cancun, six friends go on an excursion to visit an archaeological dig near Coba. Jeff, a type A guy who is set to begin medical school in the fall with his girlfriend, Amy; Stacy, Amy's best friend, an irresponsible and promiscuous aspiring social worker whose nickname is "Spacy" along with her boyfriend, Eric, an immature high school teacher; a fun-loving Greek guy nicknamed "Pablo," who lacks a common language with any of the others; and Mathias, an intense, thoughtful German tourist round out the cast of characters.