Floss has just had puppies, and the children want to know if they can keep one. "Maybe", their father says. "We could use another collie just like Floss to work with the sheep on the farm". But which one? Day after day the children watch the puppies grow until one day, Sam, the littlest, strays into the field and holds his own, scattering the flock. "Big brave Sam", exclaim the children, racing after him, "just like Floss".