In Lydia's Heart you play the part of 14-year-old Diane Lindsay. Diane has been brought by her Aunt Caroline to a run-down motor court in rural Mississippi, for reasons that are not initially clear. As you wander around the motor court, which is called Eternal Springs, you'll meet an assortment of colorful characters, not all of whom have your best interests at heart. Before long you'll find that you've got a Big Problem to grapple with.