"Bir kalp, bir kere sever!" is a gripping fanfiction that follows Eşref after his release from prison, carrying the scars of silence, betrayal, and an undying love. Haunted by memories and unknowingly in love with the same woman twice, first as Rüya, then as Nisan, he must now face a world that has changed, and a woman who may never look at him the same again. It's a story about redemption, forbidden love, and the painful beauty of recognizing your soulmate when it's almost too late.