Nothing can stop this triple team! Eight-year-old triplets Emmy, Clare, and Giselle are excited to celebrate Founding Day, the day their dad found them and they became a family. The girls want this year's celebration to be extra special. And Dad has a big sur¬prise—trillium petal charms that he found with the girls. But when the girls' little brother, Zee, slips into the river while helping them plan a special surprise, something magical happens: The charms are drawn together, forming a glowing flower, and the girls suddenly have super¬powers! Channeling their new abilities, they work together to try to save Zee, but will they be able to figure out how to help in time?