After discovering her fiance is cheating on her, heiress and fashion designer Lily Porter is whisked away to Tokyo to help a production company adapt one of her great-aunt's novels. She isn't thrilled about lying about being her aunt's assistant until it throws her into the path of the movie's lead actor, who is enough of a distraction to keep her mind off her ex for good. But can there really be a future for them when their relationship is built on lies, false identities, and a secret engagement?