Hang On, Harold! is a story of perseverance and friendship. Harold, a late-blooming leaf, is disapointed at missing the early-blooming tulips and daffodils. He decides to "hang on" through all of the seasons for the chance to see the beautiful flowers the following spring. Harold, Zippy the caterpillar, and their new friend, Ronnie, find that with perseverance and encouragement life's challenges can be met.