Waking up from a car accident, Bai Tong realizes that he has been unexpectedly reborn as a 4-year-old. After getting his heart and body played with, in his previous life, he vowed to keep away from playboys in this current lifetime! However... who actually is this playboy? Hazy memories from his previous life, unusual pheromones, and suspects that constantly target him... Can Bai Tong unravel the truth behind his previous life? Al despertar de un accidente de coche, Bai Tong se da cuenta de que ha renacido inesperadamente como un niño de 4 años. Después de que hayan jugado con su corazón y su cuerpo, en su vida anterior, se comprometió a mantenerse alejado de los playboys en esta vida actual. Sin embargo... ¿quién es realmente este playboy? Recuerdos confusos de su vida anterior, feromonas inusuales, y sospechosos que constantemente lo atacan... ¿Puede Bai Tong desentrañar la verdad detrás de su vida anterior?