A phenomenon occurs where some people can lucid dream. However, this new ability comes at a price. Die in a dream, die in reality.
Ryuta Akagami was once able to control his lucid dreams, but when someone he met died in a dream due to his carelessness he decided to never use his abilities again.
Several years later, someone close to Ryuta is captured and taken hostage in a lucid dream. Will Ryuta be able to overcome his past fears and change the present?