NiGHTS into Dreams...

Players take the role of either Claris or Elliot, two children living in the city of Twin Seeds. In their dreams, they enter the world of Nightopia, where all human dreams are played out. An evil creature known as Wizeman is gathering power to take control of Nightopia. The children team up with NiGHTS, a rogue Nightmaren (nightmare-dweller) trying to stop Wizeman.