The highly anticipated conclusion to the Journeys to Eilean trilogy. Having found the five arcana that will allow her to fulfill the prophecy and return to her world, Luna finds herself adrift in a sea of ​​doubt. Will she fulfill the prophecy and return to Earth, even if it means parting ways with Deneb forever? Or will she stay by his side and renounce her world and her past? Upon arriving at Passage Island, she encounters a surprise that will disrupt all her plans. As the oracle told her, a prophecy is a path, and its fulfillment depends on who tries to achieve it. And there are others who are interested in her opening the door between the two worlds...