A portal opens over a local company picnic and thousands of daemons stream from the portal. It is a portal into the netherworld, but is also being used to bridge the time between the future and the present. Warriors from the future, knowing that the daemons from the netherworld have come to take Earth for themselves, have returned to the present to help prepare mankind for the coming battle. One man in particular has returned to save the life of the woman he loves, but in so doing, his younger self is lost through the portal.