Saki was worried about her husband Ippei, who had been kicked out by his father, and the deteriorating relationship with her ailing father-in-law. She suggested visiting him, only to find her frail father-in-law being roughly cared for by a strict, aggressive caregiver who tightly restrained his body. Witnessing this, Ippei chased the caregiver away and asked Saki to take over the caregiving duties. However, none of them could have predicted the unexpected tragedy that would unfold once she accepted the responsibility.