The most notable of their new friends is Mark, a boy about Rush's age, who is under the care of his abusive adult cousin Oren Meeker. The Melendy children want to help Mark, but don't know how. Meanwhile, there are adventures to be had: Rush composes _his_ Opus 3, Miranda ``Randy'' and Mona try their hand at canning, and Oliver is entranced by the possibilities presented by fish and caterpillars. <sep>, Pronoun: his <sep>, A: Randy <sep>, B: Oliver