Dreams are behaviors that occur spontaneously every night after the human brain is stimulated.
Dreamland is another world in the middle of the night
Sweet dreams make people addicted and unable to extricate themselves
Nightmares make people's hearts beat faster and make them frightened.
In 4501 AD, a mysterious game--Dreamland broke into people's lives, and the late-night game began.
Intention: In a complicated world, the mystery of time can be broken