Spark

Ga-ohn, leader of the up-and-coming K-pop idol group Dexter, visits his late grandmother's memorial to share news about his big, long-awaited debut. (Source: Netflix)

Found unconscious, Ga-ohn gets transported to the hospital. Fortunately, the doctor doesn't find anything particularly wrong with his health. (Source: Netflix)

To figure out the mystery behind his physical ailment, Ga-ohn takes Ha-neul back to the set of his music video to re-enact the night's events. (Source: Netflix)

Ga-ohn gets angry at Jae-kyung for accusing Ha-neul of stalking him. Afterward, Ji-seung tries to console Jae-kyung as she goes on an eating binge. (Source: Netflix)

Surprised that Ha-neul's ringtone is his favorite song, Ga-ohn asks her how she knows it and discovers that the two share an unexpected musical bond. (Source: Netflix)

While Ga-ohn is working on his new song, Ha-neul accidentally falls asleep and loses her grasp on Ga-ohn. To their surprise, Ga-ohn isn't hurt. (Source: Netflix)

Stressed about the pressing deadline, Ga-ohn gets furious when Ha-neul lays down a hard truth about his music career and kicks her out of his house. (Source: Netflix)

Jae-kyung changes her attitude toward Ha-neul, even thanking her for protecting Ga-ohn. But sudden changes are never a good thing. (Source: Netflix)

Jin-soon receives an alarming call regarding Ha-neul. Ga-ohn tries to leave in the middle of a live broadcast, angering his entertainment company rep. (Source: Netflix)

Jae-kyung finds Ga-ohn at the hospital while he is visiting Ha-neul. Ga-ohn tells her his honest feelings toward her and their relationship. (Source: Netflix)

With Ha-neul's help, Ga-ohn finishes his song for Dexter's concert. Ga-ohn shares the good news with Ji-seung, who doesn't seem too happy about it. (Source: Netflix)

Mr. Heo tells Ga-ohn that if he signs the contract again, everything will go back to normal. Meanwhile, Ha-neul prepares to leave for China. (Source: Netflix)