In Luigi’s Girls you meet Misty for the first time in another simple mission to get you started in the game.
All you need to do is pick up Misty and deliver her back without get either of you killed or you busted. Just take care you don’t run her over or flip the car.
To make things easier she will follow you if you change vehicles, but just make sure you don’t leave her behind or run her over in the process!
This mission is about practising your driving and getting used to the radar before the more serious challenges start.