A couple loses their children near some caves in Tijuana. The children return to their parents the next day, unharmed. However, something has happened to them.

On the rainy night of October 2, 1968, eight characters waiting on a remote bus station for a bus heading to Mexico City start experiencing a strange phenomenon.

After his best friend dies in a racing accident, biking star Joe agrees to go back on the wheels for an exhibition in Chile. On a test run with his girlfriend Stephanie, they stumble upon a badly injured man dying from a mysterious v