 An unknown probe fires on Earth from space, cutting a swath from Florida to Venezula. Everything in the path of the attack was destroyed, resulting in the deaths of seven million humans including Tucker s baby sister Elizabeth. Enterprise is recalled to Earth for upgrades to the ship and to take on military crewman. Silik give Archer a message from the future about Earth s latest enemy. The Klingon Empire gives Duras another chance to capture Archer. Enterprise heads for infamous and dangerous Delphic Expanse.