King Graham and Queen Valanice were glad to have their children back. Graham thinks that it is time to pass onto them his old adventurers' hat. When he throws it across the room, he suffers a heart attack and collapses on the floor, and he is carried off to bed. The only way that Graham's health can be restored is by retrieving the magic fruit in the faraway land of Tamir. A beautiful fairy called Genesta offers Rosella the chance to be transported to the land, and find the fruit. But once she gets transported, she cannot be sent back unless she helps the fairy regain her talisman that was stolen by the evil witch, Lolotte.
King's Quest IV: The Perils of Rosella is the first game in the series to have a female as a lead character. As Rosella, you will meet characters that will either help or hinder you. You move Rosella around with arrow keys, and perform actions by typing commands.
Unlike the previous King's Quest games, which used the AGI engine, KQ IV uses the new SCI engine; the most visible effect is that the game is paused while you're typing, giving you time to give even the longest commands.