Penelope, affectionately called Polka-Dot, is a spirited young girl with a talent for assisting others, especially her sick mother. During her search for a part-time job, she forms an unlikely friendship with a tough police officer and his tracking dog, Luey. As her mother’s health declines, Luey plays a crucial role in helping Polka-Dot discover the inner strength and belief she needs to persevere.