Mavis Jeeter is fearless and bold, but she has never lived in one place long enough to have a real best friend. Her flighty mother has uprooted them again to another new home and taken a job as a housekeeper for the Tully family. Mavis wants this home to be permanent—which means finding herself a best friend. Rose Tully is a worrier who feels like she doesn’t quite fit in. Her closest friend is Mr. Duffy, but he hasn’t been himself since his dog died. Rose may have to break a few of her mother’s many rules to help Mr. Duffy. And there's Henry, a dog that has run away from home. When Mavis and Rose hatch a scheme to find Mr. Duffy a new dog, their lives and Henry’s intersect as they find friendship in places they never expected.
