一名无家可归的退伍军人把他垂死的狗和好朋友杜克留在动物诊所的门口。全心全意的工作人员护理杜克康复，然后发起一场活动，寻找退伍军人并与他的好朋友重新团聚。
Sarah Smyth
Alice Polesky
Steven Weber
Terry Polesky
Allison Hossack
Dr. Angela
Kendall Cross
Bethany Polesky
April Telek
Cami
Martin Cummins
Javier
Primo Allon
Bryan
Jay Brazeau
Dr. Jamison
Jakob Davies
Troy
Alf Humphreys
Joe
Broadus Mattison
Fellow Marine
Juan Riedinger
Manny
Jesse Moss
Matt
Nels Lennarson
Dennis
