One day, a package arrives at quirky introvert Gen's doorstop. When she opens the package, she discovers a truly human-like robot, beautiful like the girl of Gen's dreams. While trying to find a way to send the robot back, Gen accidentally hits a button that has the robot opening her eyes and coming to life. With the beautiful, flirtatious, playful and sexy robot by her side, Gen is completely swayed and decides to keep her, giving her the name Ai.

Aran, 21, believed her bond with Lene was more than sisterly-until a harsh rejection sent her abroad. A letter calls her back to Thailand, where she finds Lene dead. After the funeral, she wakes five years earlier, determined to save her.

Pray, the noble heir of Ussanakorn Palace, falls in love with Earl of Sitalaras Palace — a graceful and perfect lady. However, their love is impossible, for a deep-seated grudge exists between Ussanakorn Palace and Sitalaras Palace, making it impossible for them to be together. Pray suffers greatly, tormented by the true love that yearns for fulfillment. Until fate gives them a second chance — Pray and the Earl are reborn. Will the two of them be able to join hands and prove their true love at last?