Decha (Chantavit Dhanasevi) is a very shy young man who is like an invisible man in the workplace. Only when a colleague's computer breaks down, they will think of the existence of Decha who can repair the computer. By chance, Decha met a girl named Nui (Nittha Jirayungyurn). Nui's simplicity and kindness hit Decha at once, making her fall in love. However, the shy Decha certainly would not tell Nui about his surging feelings, but chose to hide everything silently in his heart. In a car accident, Nui suffered a head injury and suffered from temporary amnesia, only losing one day's memory. Decha got a once-in-a-lifetime opportunity. He lied that he was Nui's boyfriend, and the relationship between the two finally made progress.