The story follows the young chimney sweep Tom, who, after a series of extraordinary events, finds himself transformed into a water-baby. As a water-baby, Tom embarks on a remarkable underwater odyssey, encountering a host of captivating characters and engaging in thrilling escapades. Guided by the wise and mystical Mrs. Bedonebyasyoudid, Tom explores the depths of rivers, encounters talking creatures, and learns valuable lessons about morality, kindness, and personal growth. Along the way, he undergoes a transformative journey, both physically and spiritually, as he seeks redemption and a chance to become a better person.