Taiki agrees to see his college friends Ruma and Hoshioka to celebrate their wedding. But during dinner, Hoshioka is shot and Ruma loses his memory. Why was she killed? And will Ruma ever remember what happened?

Three friends re-unite after not seeing each other after college. The occasion is the wedding between the two. However, on this fateful day, the newly-wed woman was shot, and consequently died. The newly-wed man, because of the shock, loses his memories of the woman and his marriage to her, among other things. However, he remembers his best friend (the other guy with them), and that best friend helps him to put his life together again and discover the truth behind the death of his wife.