电影讲述一只纯种狗在成为女主人的礼物后，原本过着平静愉快的生活，但在主人有了孩子后感觉遭到冷落，离家出走，跟一只无忧无虑的野狗成了朋友，并且擦出感情的火花。并在一连串的冒险与冲突之后，最后才顺利返回家园的故事
Tessa Thompson
Lady (voice)
Justin Theroux
Tramp (voice)
Kiersey Clemons
Darling
Thomas Mann
Jim Dear
Ashley Jensen
Jock (voice)
Benedict Wong
Bull (voice)
Janelle Monáe
Peg (voice)
Yvette Nicole Brown
Aunt Sarah
Arturo Castro
Joe
Adrian Martinez
Elliott
Sam Elliott
Trusty (voice)
Ken Jeong
Doctor
Clancy Brown
Isaac (voice)
Nate "Rocket" Wonder
Devon (voice)
