Park Yun Hee (You), a straight A student at Seoul University who despises reality and only cares about Dating Sims games and capturing the heart of every guy of each game, naming you as the "Capture Goddess". You are currently obsessing over another Sims game about 5 really hot and talented guys (that would be SHINee.) and successive in capturing their hearts. However, one day you end up getting a message that questions about you really being able to capture a man's heart and has a "yes or no" button. You get angry about the insult and click yes. The sky soon goes black and what appears is a small girl by the name of Lee Jun. She tells you that she's a demon and that you agreed to what your message was actually a contract, that you must drive demons away from a man's heart by capturing and make the man fall in love with you. You refuse at first until Jun says that you are bound by the contract and must capture the demons or else you would die from the guillotine collar the binds you and if you die, she dies in the same fate as both of you are also bounded to each other. The contract also explains that in order for you to be free much sooner, you must fall in love with a man and that causes the members of SHINee from your video game to come out of it and are all head over heels for you. As much as you want them to be around you, you must remember that you must only choose one of them as your lover in order to surely break you from your contract. Sounds simple enough? Not really when you have capture the hearts of other men in order to drive demons away and have to fall in love with a guy who's from a video game. On the bright side, you have an adorable little demon girl as your guide and helper and you can still manage with grades.