Riiko IZAWA (Saki AIBU), a lonely young woman who has no luck in love, is lured to sign the contract to test a robot with absolute love. What she has to do is to input every element she wants in her ideal boyfriend from looks to personality and some other extra points. When a programmed robot “Zero-One” (Mocomichi HAYAMI) is actually delivered, Riiko is bewildered but decides to give it a try for 5-day free trial period. His innocent adoration for her seems to create more troubles than love, but one incident makes her decide to buy him and name him “Knight.” This hilarious romantic comedy is about an odd couple — human and robot — who gradually establishes the bond. Now, can love overcome anything as it is supposed to be able to?