A metal highway under the sea is no longer a dream. Captain Augustine Washington and his team of navvies are already driving the tunnel under the Atlantic in an heroic feat of construction. For Gus, a descendant of the infamous George Washington, executed as a traitor after the Battle of Lexington, this is the opportunity to redeem the family name. But his beautiful fiancee has been forced to end their engagement, and there is a ruthless and sinister plot to destroy the tunnel - and Gus himself...