Shinichi and Chikako Ohara have been married for 50 years. After Shinichi retired from his job, he has stayed at home, which Chikako stresses over. They are on the verge of having a divorce. Meanwihle, their daughter, Aya runs a food truck. She meets Ryota Kanno who is her customer. Ryota recently began working as a funeral undertaker and invites Aya to attend the Oshukatsu Fair. Aya also recommends to her mother Chikako to attend the Oshukatsu Fair. Chikako gets the latest information on preparing for death at the fair, but Shinichi doesn't like that. Their relationship gets even worse.

結婚五十年になる大原夫妻。夫の真一（橋爪功）が定年退職後、家にずっと居ることで妻の千賀子（高畑淳子）は夫源病に陥っていた。相手への気遣いも全く無くなり、真一は健康麻雀、千賀子は健康コーラスに通って趣味仲間にお互いの愚痴を言い合う、熟年離婚寸前の夫婦であった。そんな折、娘の亜矢（剛力彩芽）は自分が営むキッチンカーの客で、葬儀社に転職したばかりの菅野（水野勝）と出会う。菅野から終活フェアに誘われた亜矢は母親の千賀子に行くことを勧める。フェアで最新の終活情報を得た千賀子は前向きに今後のことを考えようとするが、真一は縁起でもないと嫌がり、新たな危機が生まれる。