When Ma Peachey resigned from being a mother to take up yoga instead, the rest of the family took up being in crisis: no one cooked dinner, no one picked up the dirty laundry, and the children were always late for school. Ma might be off finding inner peace, but Pa Peachey, Ava, and Ollie are falling apart! Only almost-nine-year-old Betty is wise enough to know that the family needs to be rescued. Enter McTavish - a rescue dog on a mission to rescue his brand-new family. A very good plan is needed to get the Peacheys back on track. But if anyone can do it, McTavish can. After all - McTavish is a very good dog.