Eve McHuron was one of three women being transported to Ophiucus III as a wife in 2266. Originally from a farming planet, she had no marriage prospects, as the farms were tended by automatic machinery and her brothers.
She was introduced to the Venus drug by Harcourt Mudd, the architect of this scheme; the drug enhances a user's attributes. Her natural allure was boosted by this chemical. She was brought to the USS Enterprise after the cargo ship Mudd was using was destroyed in an asteroid belt.