A young boy discovers a stray balloon, which seems to have a mind of its own, on the streets of Paris. The two become inseparable, yet the world’s harsh realities finally interfere.

Pascal Lamorisse is the son of filmmaker Albert Lamorisse. He is also the little hero of some of his father's films (White Mane, The Red Balloon and Stowaway in the Sky). Over the years, Albert Lamorisse, who took his son on all his shoots, sought to transmit his expertise and his passion for filmmaking, even on his last film, The Lover's Wind. There is something in the story of Pascal Lamorisse that touches on a fabulous story: it is the story of the transmission of cinema from father to child.