Leo, a young boy walking along the beach, discovers countless starfish stranded on the sand after the tide recedes. Determined to help, he begins returning them to the ocean one by one. Feeling overwhelmed by the sheer number of starfish, Leo starts to lose hope, but a wise fisherman reminds him that every small act of kindness makes a difference. Renewed with determination, Leo learns that even the smallest actions can have a big impact on the world around him.