Sakke, Salla and Saastamoinen are Three Aces - a great agent trio. They live in an apartment building where all sorts of things happen and happen. A real dose of dexterity and courage is needed to survive the riddles of the home district. With the help of the effective detective work of the aces, the riddle after the riddle is solved, from the mysterious tomato dropper to the stolen bell watchers.