In a world where the "Dream Network" system developed by the "Onelos" technology company has become a global mainstream entertainment and social platform, dreams are no longer private. They can be recorded, shared, and even traded. Leo Card was once a rising star in the industry, a talented dreamer who was good at weaving unforgettable dreams. But due to a tragedy in the past, he went into self-exile and became a down-and-out artist who took on odd jobs in the streets and alleys.
However, when Leo weaves a customized nightmare full of depression and fear - the "Chaos Beast" - accidentally leaks from his old equipment and invades the Dream Network, his life is turned upside down. This nightmare spreads quickly like a virus, infecting users' dreams and causing large-scale psychological panic and real-life chaos.
