Young Peter Lundstrom has been silently calling for attention/help.   After being expelled from his boarding school, Peter returns home to a father who chooses work over spending time with him and a grandmama who easily turns the other cheek.  Feeling his son just needs a sense of values, Peter is sent to live with family out in the primitive world of Walnut Grove. The family being the Olesons.  However, feeling rejected and out of place in the country, Peter unleashes his fury on the mercantile which not only gets Mr. Oleson's attention but also the attention of Charles Ingalls.  Knowing he and his family are not the right ones to help Peter, Mr.Oleson has Peter live with the Ingalls to learn about values.  However, it's not a merely values Peter learns while staying out at Plum Creek.  From farming to swimming, driving, milking, communicating Peter learns what it is meant to love and be loved in return.  A valuable lesson Peter wants to share with his father when he arrives to pick up Peter at the end of summer.   Where does Peter and his family actually live?  Will Willie ever get to see an indoor outhouse? Should Charles rethink his approach to teaching someone how to swim?