Lula's world transforms when Theo and his mum Simone join her family. During a seaside adventure, the three discover the magic of teamwork while building an impressive sandcastle, until an unexpected twist tests their brand-new bond. This charming picture book by Júlia Moscardó celebrates the messy, wonderful journey of blended families and sibling connections. Through stunning artwork and lyrical storytelling, young readers will dive into seaside adventures and discover that the strongest relationships can weather any storm.