SETI radio astronomer Dr. Stephen Browning wakes disoriented and confused in a dingy gas station bathroom. He stumbles home trying to put the pieces of his night back together, only to discover that there are new tenants living inside his apartment when he arrives. This leads him to a shocking realization – over a month has passed since his last recollection. Oddly, these new tenants provide him with one clue, a letter - written in his own handwriting - instructing him what to do next:
Shave your head.
Eager to uncover the reason for his memory lapse, Browning complies and finds a string of coordinates tattooed onto the side of his head, which inevitably lead him to the discovery of a cryptic signal from far outside our solar system.
Enlisting the help of a wealthy Silicon Valley engineer and a brilliant NASA robotics programmer, Dr. Browning begins a journey to decipher the meaning of the transmission, only to find he has become an unwitting pawn in a much bigger game.
It soon becomes apparent that the transmission is not only a message from the farthest reaches of the galaxy, but a warning from the future. Unless Browning and his team can protect the information from falling into the wrong hands, its message – and its warning – will be lost forever.