After best friends Robot and Dog spend a happy day at the beach; Robot's joints freeze up-they've become rusted through by the water. Dog is powerless to help Robot; who can't move an inch and is too heavy for Dog to carry.
Eventually; Dog makes the difficult decision to leave Robot there; and return alone to the life they shared.
The memory of their friendship lingers; and as the seasons pass; Dog makes (and loses) new friends; from a melting snowman to epicurean anteaters.
