After possessing another woman's body, a young woman spends years longing to return to her original world. But when a dimensional portal that opens only once every hundred years finally appears, she chooses to stay for the people she loves. Believing she has found true happiness, she never suspects that their love is built on lies. Betrayed by those she trusted most, she realizes that her devotion has blinded her to the truth. Now, determined to reclaim her freedom, she makes one final decision: to end her possession and leave this world behind, no matter what it takes.