At the heart of Yucatan, in Maya country. In a hidden cenote lives a mysterious creature, treasure guardian of an ancient lost civilization. In the darkness he eagerly awaits the passage of the sun whose rays can reach the depths of his cave only once a year. This day is approaching and this time the creature is determined to do everything to keep this light that warms and allows him to enjoy his treasures ... But can man capture the sun? And even more keep it?