Two hitmen show up in Miami to whack crooked businessman. At the same time Matt, a high school kid, comes to the same house to "kill" another student as part of a game. When the plans collide, mayhem ensues, and Matt's struggling ex-columnist dad, a bored wife, and two confused police officers are called to the scene. Then two dimwitted criminals choose to hold up a dive bar where a nuclear arms deal is going on. Soon the whole motley crew are caught up in a hostage scenario in which the weapon accidentally gets brought aboard a hijacked plane.