To the constant disappointment of his mother and his teachers, Joey has trouble paying attention or controlling his mood swings when his prescription medications wear off and he starts getting worked up and acting wired.
Joey, who is still taking medication to keep him from getting too wired, goes to spend the summer with the hard-drinking father he has never known and tries to help the baseball team he coaches win the championship.
Joey tries to keep his life from degenerating into total chaos when his mother sends him to be home schooled with a hostile blind girl, his divorced parents cannot stop fighting, and his grandmother is dying of emphysema.
Joey's father returns, calling himself Charles Heinz and apologizing for his past bad behavior, and he swears that once Joey and his mother change their names and help him fix up the old diner he has bought, their lives will change for the better.
"Everything goes topsy-turvy for Joey as he becomes the man of the house, looking after his new baby brother, taking care of his troubled mother, and seeking out his missing father"--