Colter Shaw recorre el país en su autocaravana de la vieja escuela para ayudar a la policía y a ciudadanos particulares a resolver crímenes y localizar a personas desaparecidas, hasta que su último caso lo cambia todo.

Aliens have invaded Earth, and as a result, two prisoners from opposing sides are locked in a cell, three Spanish soldiers seek refuge in a factory, and a married couple of scientists is left alone with an imprisoned extraterrestrial.