Shy amateur historian Randy Sullivan, age 23 and unhappy with his life, is approached by his double from a parallel Los Angeles, a bombastic physicist and inventor who calls himself "Sully." Together they step out of this reality and visit versions of Earth stranger than Randy has ever imagined... and those so eerily close as to be just out of reach.

But all is not well back home. Randy's younger brother and sister, not to mention his gorgeous neighbor Penelope, are stranded by encroaching California wildfires. The flames are drawing near and time is running out.

And Sully, genius and connoisseur of a thousand worlds, has a secret plan of his own – and it does not involve Randy Sullivan ever getting home alive.