PWhile pursuing an investigation, police officer Alex is injured by a mysterious character with a disfigured face. Stuck in hospital, he meets Léo, an eleven-year-old patient who has the ability to leave his body at will. The boy can fly and pass through walls like a phantom, invisible to all. Thanks to Léo, Alex, along with the intrepid journalist Marie, can assume the roles of guardian angels.
Gagnol and Felicioli spent five painstaking years making the Phantom Boy, and their effort shows in every delightfully detailed frame. Continuing their fascination with the "animated film noir," the film pays shadowy homage to classic gangster movies and captures the energy of New York City in a beautifully illustrated skyline. But the heart and soul of this thrilling adventure is young Léo, who must battle not only the evil gangster but also his own illness — and when Léo's unique gift requires him to make some difficult choices, he learns what it really means to be a hero.