David and his estranged daughter Lea are forced to make a long and eventful car journey home together after she leaves university under tragic circumstances.

"I love you, customer!"
Hee-kyung and Seung-ah are emotional workers who sell cosmetics at large marts. I'm a store salesman. They should always greet guests with a smile. One day, a customer comes asking for a refund on cosmetics purchased a few days ago. Customers pick on all kinds of faults and bother them. However, they smile and endure the customer's harassment. As the situation becomes serious, the mart manager tries to deal with the situation. The guest asks Heekyung to kneel and apologize. Hee-kyung kneels down and apologizes, holding back her anger. Still, the customer's harassment continues. Company colleagues call Hee-kyung, who is kind to customers, an immortal smile angel. How long can Hee-kyung treat rude guests without losing her smile as an immortal smile angel in the silver company?

Two vulnerable friends run from their problems in the city, taking shelter at a commune lead by a woman who cannot feel pain. Little do they know they've stumbled into a situation worse than the one they left behind, as they get caught in a whirlwind of chaos, aggressive neighbours, hallucinatory ceremonies and land grabs that, combined, could prove fatal.