.Park Hyesung, who is working as a salesperson for an IT company, has a crush on the assistant manager Kang Siwon of the same team. Hyesung who is introverted and timid has a unique taste of doing SM play alone thinking of Siwon! Then one day, an unidentified man (Lotus) fell from the sky and landed on Hyesung's yard.The unidentified Alien and the earth's most timid man, Park Hyesung.The universe's most powerful troublesome romance begins...!!