Beachhead (S06E04)

The Tholians take action as Siroc puts a new weapon to the test against Starfleet. Meanwhile, a significant summit of Alpha Quadrant factions, the largest since the Dominion War, is struggling to find common ground. Although they realize the necessity of uniting against the Tholians, the Federation is withholding crucial information from its partners. Zen, the illegally joined Trill, grapples with issues related to his symbiont, while the first-ever depicted Tellarite Captain confronts the lethal Tholian weapon head-on.