Joel has been waiting three years for his grandfather, who lives in New York State, to visit Wyoming; but, Grandpa Benaducci doesn't act like the grandpa Joel remembers. Grandpa seems lost without Grandma. Joel and Grandpa used to have lots of fun together - walking, fishing and playing with Joel's Black Lab, Banner. Now Grandpa is short-tempered, forgetful and inconsiderate, forever checking his watch. Joel is embarrassed by Grandpa's bad manners, and he always gets in Joel's way. Does Joel just see him differently now that he's almost eleven?

Even Banner acts strangely this hot summer. Banner seems to have less energy and isn't eating well. Is the heat affecting them all?

Joel is torn between love and hate and must learn to deal with his anger during a summer that will change his life.