Trekipedia

Dulisian IV

Site of a Federation colony near Galorndon Core. In 2368, a Priority-1 distress call was faked by the Romulans, involving the planet’s supposed evacuation due to a massive failure in the colony’s environment support systems, but the ruse failed to lure the U.S.S. Enterprise NCC-1701-D away from meeting three Vulcan ships of “peace envoys,” which were actually a Romulan invasion force headed toward the planet Vulcan.^[1]

References

• ^[1]TNG-207: Unification, Part II