Star Trek: Enterprise: Season 4 [Blu-ray]

In the final harrowing season of Star Trek: Enterprise, timelines collide as Captain Jonathan Archer and his crew rally with humans and other species to form the Federation and prevent intergalactic war. Starfleet and the crew of the Enterprise are put to the test as they fight to avoid a deadly virus on the ship, deal with an alternate “mirror” universe, battle radical alien factions, and prevent the alteration of history – including a Nazi-occupied America. If the Temporal Cold War is not brought to an end, history and life as they know it will be forever altered.