Three robbers escape with loot from a heist before one of them kills the others. Their corpses wash up near the aftermath of a maritime calamity, provoking a policeman's interest.

Takayuki Iwabuchi, a former yakuza member with a tattoo of Kisshoten on his back. Although he has a criminal record, he is currently working as a driver at a hearse transportation company. One day, a young man visits the company and asks Takayuki to transport the body of his fiancé, Sawa, who had unexpectedly passed away, to her hometown in a rural area of Takamatsu, Shikoku. Takayuki decides to go to Shikoku with the young man, However, the man disappears when leaving to take a call while they are stopped at a rest area near Setoo Bridge. Left alone, Takayuki arrives at Sawa's home village after much searching. He then tells Sawa's bereaved family about the situation at her parents' house. There, he learns of the tradition of posthumous marriage, or 'Yukon', from the village elder...