Adapted from Keigo Higashino's acclaimed novel "The Hollow Cross". Nakahara, who runs a pet funeral parlor, divorced his wife due to a tragedy 11 years ago and has never been able to get over the pain. One day, he learns that his ex-wife Sayoko has been murdered. In order to find out the cause of her death, Nakahara begins to track down the truth and is forced to face his past again, which he has been running away from for years.