The heroines from both D.C. ~Da Capo~ and its sequel D.C.II ~Da Capo II~ are back again. This time to try to beat you at cards! The characters of both novels are going to go to bed, but suddenly disappear and find themselves at different points of an unknown and eccentric city. Moreover, some of them have lost their memory. So, protagonists will have to reunite with their classmates, and find a way to return to Hatsune Island. And what should help them to do it is the official poker tournament, organized not by anyone else but by princess Sakura...