Star Trek: The Next Generation S03 E24 Ménage à Troi

"New stars. New stories. New worlds to explore."

Stardate: 43930.7. Riker and Deanna, both on shoreleave, are unexpectedly joined by Deanna's mother, Lwaxana, on Betazed. Shortly, all three are kidnapped by the Ferengi who want to study Lwaxana's telepathic abilities.