After pinpointing the site of the Xindi doomsday weapon, Archer plans to sacrifice himself to destroy it. Daniels arrives and takes him 400 years into the future to show him the far-reaching consequences of the Enterprise crew's actions and to beg Archer to reconsider.

Archer persuades Xindi weapon-designer, Degra, to examine evidence of the plot to pit the Xindi against Earth to prove humanity is not his enemy. When Archer demonstrates they've been manipulated, Degra offers to attempt to delay the launch of their superweapon. Meanwhile, the crew mourns their lost mates, with Trip still coming to terms with his sister's death and wrestling with the recent death of a subordinate. T'Pol confronts her substance addiction to trellium-D.