Illustrations and brief text describe how best friends treat each other.

Kate Mularkey is thrilled when Tully Hart moves in across the street, and the two form an immediate friendship that remains strong through the next thirty years, until one act of betrayal threatens to destroy both their lives and the friendship that has seen them through life's highs and lows.

Twelve-year-olds Cady and Nana explore the strengths of their special friendship as they cope with Nana's cancer.

When first grader Lily gets into a fight with her two best friends, the experience teaches her a lot about friendship.

Second-grade best friends Ivy and Bean beg for ballet lessons, then, when they are cast as squids in their first recital, scheme to find a way out of what seems to be boring, hard, and potentially embarrassing.

Long time friends Mary and Jody set out on a series of adventures to their first horse show, a cow funeral, and an old fashioned sleigh ride; but the biggest surprise of them all awaits them on Christmas.

George helps his best friend Abigail practice for the city spelling bee, then cheers her up when she makes a mistake.

Even with a new best friend and a new boyfriend, Samantha has a hard time adjusting to life without her best friend Juliana, who died of cancer.

Thirteen-year-old Matt is so envious of his best friend Keith that he wishes things would go badly for him, and when Keith's fortune changes while at the same time Matt finds his first true girlfriend, Matt is overcome with guilt.

Twelve-year-old Annie ponders the many rhythms of life the year that her mother becomes pregnant, her grandfather begins faltering, and her best friend (and running partner) becomes distant.