Tak's favour seems to have involved getting Ji Na to cancel her dinner plans with Seung Min so that Han Na and Seung Min can go to the autograph event together. When Seung Min walks in with Han Na, he is surprised to find Ji Na there with Tak and is angry that this is what she cancelled their dinner date for. Likewise, she is angry that he didn't tell her he was going anywhere with Han Na. She stomps off, hurt and angry. Seungm Mn is sitting outside alone when Tak walks up to him, asking where Ji Na went. Seung Min tells him she walked off, and Tak becomes concerned about her being alone because he has noticed every time she mentions the weird things that have been happening to her. He tells Seung Min about someone stalking Ji Na and is angry that SeungMin could just let her walk alone. Meanwhile, Ji Na is running for her life from the stalker. The guys split up to look for her. (Source: Dee at MyDramaList)