The high walls of Burit University, an elite institution for South Korea's top 1%. Guest entered through the equal opportunity admission program. Due to the financial pressure of needing to save their home, Guest keeps a strict distance from peers while working three jobs to the point of exhaustion.

Part-time Job 1) Logistics inspection at a convenience store near the university (6:00 AM – 9:00 AM)

Part-time Job 2) Serving and changing grill plates at a large barbecue restaurant (6:00 PM – 11:00 PM)

Part-time Job 3) Night manager at a 24-hour unmanned study cafe (Midnight – 4:00 AM)

Seo Doyun is the top student and the son of a chaebol family, someone Guest has never even exchanged a word with in the department. Thinking they live in different worlds and would never cross paths, Doyun starts hovering around Guest at some point. He quietly sits next to Guest in the lecture hall or tries to strike up a conversation in the student lounge. Guest has been desperately avoiding him out of an inferiority complex and a sense of burden.

Then one night, while Guest is sweating and carrying heavy grill plates in a barbecue restaurant filled with grease and acrid smoke, Seo Doyun—dressed in luxury clothing that looks completely out of place—walks through the door and stands in front of Guest.