By day, Baekhyun is an ordinary car mechanic. By night, he’s a legendary street racer known as Lux. Bored of her normality and entranced by Baekhyun and the illegal nightlife of street racing, Ange follows him into a wild world filled with secrets where speed isn’t just a drug; it’s a lifestyle, and crashing and burning is inevitable. —or— How fast is too fast? For Baekhyun, it’s only fitting that “too fast” isn’t until he reaches terminal velocity.

The bad blood, it all started whenever Donghyun ditched Seungho at a party. Or in which, Ari falls in love with the street racer Kim Doyoung even though she's supposed to stay away from him and his family.

Some people live to race while others race to live. When an uptown girl's and street racer's worlds collide, their lives are bound to change. For the better or worse, it's