he film's prologue depicts Jim Hawkins as a five-year-old (voiced by Austin Majors) reading a storybook in bed. Jim is enchanted by stories of the legendary pirate Captain Flint and his ability to appear from nowhere, raid passing ships, and disappear in order to hide the loot on the mysterious "Treasure Planet". Twelve years later, Jim (now voiced by Joseph Gordon-Levitt) has grown into an aloof and alienated teenager. He is shown begrudgingly helping his mother Sarah (Laurie Metcalf) run an inn and deriving amusement from "solar surfing" (a hybrid of skysurfing and windsurfing atop a board attached to a solar-powered rocket), a pastime that frequently gets him in trouble.
One day, a spaceship crashes near the inn. The dying pilot, Billy Bones (Patrick McGoohan), gives Jim a sphere and tells him to "beware the cyborg". Shortly thereafter, a gang of pirates raid and burn the inn. Jim, his mother, and their dog-like friend Dr. Delbert Doppler (David Hyde Pierce) barely escape. The sphere turns out to be a holographic projector, showing a map that Jim realizes leads to Treasure Planet.