改編日本溫暖系漫畫家西炯子作品《父親，我已經不是小孩子了》
原以為是命中註定，卻意外展開只有貓咪知道的愛情羅曼史……

太太有喜子（倍賞千惠子 飾）最近對結縭50年的丈夫勝（藤龍也 飾）非常不滿，跟他說話都不回應，自己寂寞得只能跟家裡養的貓咪小不點說話，她只好跟常常回老家探望爸媽的女兒菜穗子（市川實日子 飾）抱怨丈夫。某天有喜子意外發現勝竟偷偷和年輕時的心上人會面，難過之餘決定鼓起勇氣對勝提出離婚，沒想到勝卻對她傾訴出深藏在內心多年的祕密……。

Masaru just retired and he and his wife Yukiko are expecting to have a quiet life with their cat, CHIBI, after their kids have left home.Yukiko feels that she was abandoned by her husband, who has never expressed appreciation for her years of support, let alone his love for her. One day, their loving cat CHIBI disappears. However, Masaru does not seem to care about it at all. His attitude triggers Yukiko to decide that it is time for them to divorce. After a long, intense discussion, Masaru confesses a story to her, which he has held in secret for years.