Plot synopsis: In 1987, Mirapolis opened its doors in the Parisian suburbs with the ambition of becoming the great French theme park capable of rivaling Disney. Driven by a spectacular vision and an imagination inspired by national tales and legends, the project quickly turned into a nightmare. Through archival footage and firsthand testimonies, the documentary retraces the meteoric rise and dramatic fall of this outsized dream, which shut down just five years after its inauguration.