The homeworld of the Ventaxians, a peaceful society that believed a mythical figure named Ardra would return to enslave them after a thousand years.
Ventax II is home to the Ventaxians, who according to their history made a bargain with Ardra a thousand years earlier: an end to war and pollution in exchange for their eventual servitude. Their society became calm and technologically modest, and a Federation science delegation was working there.
In Devil's Due, panic grips Ventax II as the millennium ends and a woman claiming to be Ardra arrives to collect. Picard proves that she is a con artist using advanced technology, freeing the planet from its contract.