Koyomi Araragi visited the hospital led by Izuko Gaen. What he saw there were two mummies lying in bed, and both of them were still alive. Izuko and Koyomi, wanting to solve this case, receive a new report that another mummy has been sighted.

Five members of the women's basketball club at Naoetsu High School go missing. According to Suruga Kanbaru and Seiu Higasa, that's not the only problem. Koyomi takes on this case and searches for the missing people with Izuko.

To revive a mummified Suicide-Master, Koyomi arrived in Heaven instead of Hell. He obtained some wonder medicine and returned to this world. He starts to revive Suicide-Master, ignoring Shinobu Oshino, Mayoi Hachikuji, and Izuko, who are concerned.

Koyomi went back to the hospital again with the answer to the code that the fourth mummy left. He reported his results, and it was Izuko's turn next, but she seemed to be in low spirits…

Shinobu and Suicide-Master reunited for the first time in 600 years. In contrast to the two rejoicing at their reunion, Izuko delivers some news to Koyomi.

Koyomi joins the girls' basketball meetup and asks them what the five missing people have in common. He reaches a certain conviction as he listens to them and quickly leaves. In the meantime, who paid Suicide-Master a visit, as she was waiting alone at the Kanbaru residence...?