The Excelsior Encounters The Machine Army

Captain Sulu took the Excelsior near the Klingon border when the moon Praxis exploded. The explosion opened a temporal vortex in which the flagship of the Machine Empire's army emerged. The Machine Empire's army consisted of Decepticons, Cybermen, Borg, Toclafane, Daleks, Cylons, Replicants, and Terminators. The Machine flagship attacked the Excelsior and a fierce battle ensued. The Excelsior suffered only minor damage. The Excelsior defeated the Machine flagship and forced it to retreat. Sulu then reported the incident to Starfleet.