在这部旅猫日记剧情片中,傲娇的流浪猫娜娜（幸运小七）被悟（福士苍汰饰）救下后，在铲屎官悟的侍候下过着快乐的猫生。一人一猫度过了几年的温暖时光，主人悟却突然有一天要将娜娜送走给他人寄养，没等娜娜反应，便被悟带着踏上旅程。穿过北海道，跨越富士山，探访故友，悟的那些不为人知的过去也都一一展现。直到最后，娜娜得知了为何悟要将自己送走的真相，却依旧对悟不离不弃。
Nana is the cutest girl. She is also smart and aware of her talents. She has paws and purrs. Her father Satoru cannot take of her anymore and must give her up. He searches for someone to take care of Nana and begins visiting people who may be good candidates. As Nana and her father take trips in their car Satoru meets old friends, meets new friends and his own story unfurls in the process.
旅猫日记。我就要一只娜娜这样的流浪猫！。泪目。一封猫的告白书。"看完这部电影，你会更懂你的猫"（略有剧透）。这算剧透吗？。“猫才不会管你，你要好好整理自己的情绪。”。
