Operation Clean Sea Off the coast of Whale Island, toxic algae threaten to reach the shore where sea turtles have been laying their eggs for years. There is not a minute to lose: we must protect these eggs! Welcome to the famous Topford College! Here, children from all over the world study and spend their daily lives together. Between classes, sports competitions, great friendships, and small romances, every day life at Topford is full of surprises… In the corridors of the college, one can also meet five girls, bound by a very strong friendship: the Thea Sisters. These are their adventures, which speak of their dreams and feelings!