Megan's world is turned upside down when she hears her calm life with her little brother and single mum is about to change. She hears she's soon to have a stepfather and a stepsister. Megan thinks they're a bit weird and is determined to stop the wedding. She discovers they're actually even stranger than she thought - they're from another planet.

Jack Jr, Miles Jr and the whole gang are back for one last wine-soaked journey prompted by the mysterious "Sommelier." Joined this time by Puck, a fan of The Napa Boys comics, the group will learn about love, loss, friendship and viticulture.

Harriet may only be in the sixth grade, but she's already found her calling: to be a spy. In a private journal she takes everywhere, Harriet records suspicious activity and keeps a running list of observations on virtually everyone she knows. It seems harmless enough until, one day, someone finds the journal and exposes Harriet's critical thoughts about her classmates. Suddenly, even her best friends are against her, and Harriet resolves to take revenge.