"Beware of what the tide may bring..."
Ethan Hodges is deeply unsettled when thousands of decomposed starfish inexplicably wash up along the shore of Pelican Bay. As the ominous sea epidemic spreads to other marine life, he continues to see a suspicious-looking man loitering on the beach.
To solve the mystery, Ethan seeks help from longtime friend, Sheriff Dansby, and Reagan Langsley, a beautiful marine biologist from Lighthouse Point. Spurred by curiosity and jealousy, Ethan's estranged wife, Morgan, joins them in the investigation.
When the elusive outsider is finally arrested, an enigmatic relationship develops between Ethan and the man. With cautious prodding, Ethan learns that the fate of the world appears to rest in the hands of the tall stranger named...Mr. DM.