Julián notice three women dress up like a beautiful mermaid while on her way home riding the subway with his abuela one day. The women have beautiful long hair, wearing shimmering long fishtails gown. Julián start to daydream of dressing up just like the ladies in the train, with his own custom mermaid style. But what will Abuela think? This book share the idea of unconditional love by celebrating individuality of a person.