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Seven years ago, Nathan Lowe and Zoe Hsu were deeply in love despite their poverty—until Nathan's heart condition shattered their world. To save him, Zoe made the ultimate sacrifice: giving him her own heart before disappearing without a trace. Now, a successful man haunted by her abandonment, Nathan finally tracks down Zoe—who lives with an artificial heart. What begins as a revenge wrapped in love soon unravels secrets darker than betrayal.