She drives a cab on the nightshift and meets every scum there is. Gyung-sun lives a scanty life day by day, but she used to be a professional safecracker that earned her the nickname, "Leather Jacket." Once she was a hot item, now she's all washed up. On the job, she relieves her fatigue with tonic beverages, and finishes a cigarette with just one drag, but she gets by the day clingingon to the chance that someday she'll meet her only hope in life, her daughter.
But the world doesn't seem to let her have things that easy. She's still haunted by her dark past as this third-rate gangster keeps threatening her to pay back the money her ex-husband ran away with. Then one day she meets a girl named Soo-jin, who is a spitting image of herself back when she had it made. With Soo-jin's help she gets fed up with her dire circumstances, and finally decides to do something about it. To live for tomorrow, she fights the world for a day.
She used to be a round girl for the ring and now she wants to be a famous singer. She carries both a pretty smile and tears in her eyes. Her name's Soo-jin but people mostly remember her as "Sunglass Girl." She lives with her vicious boyfriend, Bulldog, who never leaves her alone and beats on her, especially when he gets drunk. But her inevitable meeting with Gyung-sun emboldens her to take off the sunglasses that is hiding her scar. After waiting and enduring long enough, she stands up to make a complete change in her life. To live for tomorrow, she stands against the world today.
A dog fighting ring that's overflowing with money, power, and desire. The stakes are getting higher and people are getting richer. The gamblers feed off a dog-eats-dog world since as the ring is filled with macho men whose golden years are of the pastime. The money that goes into the pot is something even the slumiest of the slums would love to get their hands on.. The only problem is that Bulldog operates the ring and a ruthless loan shark, named KGB, owns the business. No would ever think of taking the money and running with until Soo-jin and Gyung-sun show up.