Neighbors Sophia and May are best of friends who know they can always rely on each other to be there. One day their adventures together take them beyond their yards to a nearby field. There they find a wild blooming field of sourgrass. May shares, “My mom says it show up every spring, keeping a promise.” Sharing sourgrass becomes a sweet representation of their deep bond.

May moves away, straining their bonds of friendship, withering their joyful connection, and leaving Sophia with only their imaginary friends. Frequent letters soon dwindled to nothing. Sofia begins to wonder if she has been forgotten. Spring brings the promised return of the sourgrass and with it all of her wonderful memories. Inspired by the sourgrass’s promised return, Sophia reaches out again to May by letter hoping that the promise of their friendship will also be kept. The story ends with a return letter from May and a glimpse of a little redheaded girl who could fill the void of May’s absence.

Sophie is a dark skinned girl with cornrows and May, a light skinned girl with brown hair. Pastel illustrations convey the connection and the feelings of the two friends.