A hobo left home (and his son) 25 years ago. His son is hoping for another 25 years.
This is the story of a family that gets along pretty well, father, son and daughter. Also, dad is trying to zero in on his one-year girlfriend, but she knows that he is not ready to emote enough to be marriage material.
Dad's father shows up to have a reunion. Dad blows him off. Dad's girlfriend pounds him for it. Dad decides to allow his father to spend a day meeting and getting to know his grandchildren.
This turns into a visit for several days, until Christmas. Then grandpa will go off with his hobo friends until the next visit.
Finally the son and daughter get to have another relative; grandpa tells stories of the road. Then they meet his hobo friends.
A good Christmas story.