Everybody thought that Leo died in the war, so it's a big (and happy) surprise when he shows up several days later, arriving in style on the back of an unharmed Festus and with a former Titaness. But just a day after their return, Calypso falls gravely ill, and there's nothing that can be done about it, not even the use of the Physician's Cure. Nico predicts only a week for her left to live, and after that? Death. However. . . . There are legends. Legends of a potion so strong that it far surpasses the Physician's Cure. The ingredients are specific and difficult to obtain, especially since another dark force is searching for them, but it's Leo's best shot at saving Calypso. And nothing is going to stop him. A/N: Takes place after BoO, before ToA. In fact, pretend ToA never happened if you've read it already. Also, there's going to be some mild language and two of my OCs in here. Other than that, happy reading!!