Cha Dae-Woong (Lee Seung-Gi) Is A Normal College Student, With Ambitions Of Becoming An Action Star. Until One Day, He Accidentally Releases A Gumiho (Shin Min-Ah), A Legendary Fox With Nine Tails Who Was Sealed Inside A Painting By Samshin Grandmother (三神). Fleeing The Scene, Dae-Woong Suffers A Life-Threatening Fall And Is Only Saved By The Gumiho Giving Him Her "Fox Bead" (여우 구슬). When Dae-Woong Awakes And Meets A Mysterious Pretty Girl, He Initially Treats Her As Eccentric Or Mentally Ill, Before Finally Understanding That She Is A Gumiho In Human Form. According To Myth, Gumihos Eat Men's Livers, So Dae-Woong Is Scared Out Of His Wits, And The Gumiho Takes Advantage Of His Fear By Sticking By His Side. He Names Her "Mi-Ho," And Keeps Her Happy By Buying Her Beef And Hiding Her True Identity. Mi-Ho Wants Nothing More Than To Become Human, So They Strike A Deal: She'll Lend Him Her Mystical Fox Bead So That With His Increased Speed And Strength, He'll Be Able To Do Difficult Stunts, And In Exchange He'll Help Her Become Human. As Time Passes, They Get To Know Each Other Better And Dae-Woong Is Charmed By How Mi-Ho Looks At The World With Childlike Wonder.