It is the year 2036. Big Bang has disbanded, and YG Entertainment is now run by Yang Hyun Suk’s son, Yang Geun Won. Hwang Hyun Jae is an orphan with extraordinary musical talent, and a capable music producer at YG Entertainment. However, she also has a unknown parentage. She meets the next generation of Big Bang and trains them to become true musicians, forging a close relationship with them, and unknowingly, a tangled love story starts, pulling them in the midst of the mystery of Hyun Jae’s past…