High school student Arisu Sakaguchi begins experiencing vivid dreams of a past life on a lunar base - and discovers her classmates share the same memories. As Arisu is drawn deeper into the mystery of her former existence, a young boy next door awakens to a past-life persona consumed by love for Mokuren. The intense passions and sins of their previous lives collide with the present, gradually revealing a shocking truth - and an unexpected connection between Arisu and Mokuren that binds their fates across lifetimes.