Sohee and Jiyeon two mystical angel that was sent down from a mystical castle up above the sky. Although both of them are not blood related they are both adopted by the same father. But, Sohee and Jiyeon did not listen to their fathers words, and went to the human world. To be punish they will not be allow to go back to their home, until they helped two boys that are hopeless in life. What will happened two those two angels? Will they fall in love and stay in the human world?