Fenway and his beloved human Hattie are a perfect pair until they move from the city to the suburbs, after which the Jack Russell terrier must find a way to get his Hattie back.

Fenway's life is pretty great, except for the strange stripey chipmunks that have suddenly appeared in the Dog Park behind his house. He's determined to catch them, but one of their hiding places contains some stinging insects. Ouch! Fenway thinks he can take care of this injury himself, but his humans don't let him. They take him to the Place of Fear and then Hattie doesn't even help him take off the Cone of Doom!

Fenway y Hattie, su adorada pequeña humana, hacen una pareja perfecta. A ella le gusta ir al Parque de Perros, saltar la cuerda, jugar a la pelota y disfrutar de comida deliciosa tanto como a él. Pero cuando se mudan de la ciudad a un barrio en las afueras, las cosas cambian radicalmente. Hattie se pasa todo el tiempo en una casa en lo alto de un árbol, que pareciera ser la casa de unas ardillas, y juega a la pelota sin él. Abatido y confundido,...