Millicentistakingasemesterofffromherstudiestoconcentrateonherthesisaboutchildrenwithsevereallergies,whichmakeshertheperfectpersontotakecareoflittleJohnny,asickly,mutechildwhosuffersfromeveryallergyunderthesun,fromnickeltoartificialfabric.Hisoverbearingmother,Rebecca,isanaccomplishedauthorwhoisfocusedonherlatestbookrelease,whilehisdissatisfiedfather,Jacob,spendssweaty,shirtlessdaystoilingawayonacarpentryprojectinthebackyard.