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Mi-Na (Choi Gang-Hee) works as a tax collector in Seoul. She learns that her father has been recently hospitalized back in her hometown of Muju. Her father runs a small stationary store there named Mi-Na's Stationary. Mi-Na then contacts a real estate agent in Muju to sell her father's stationary store. The real estate agent though insists she come to Muju to sell the store, but Mi-Na has no desire to return to her small hometown. Mi-Na grew up there as an outcast and doesn't look fondly back at her childhood. Things change though after Mi-Na breaks up with her boyfriend, who was cheating on her, and then gets suspended from her job for intentionally ramming her car into another car. On her way home from her last day at work, she receives a phone call from people who lent money to her father and also the real estate agent back in Muju. The real estate agent again asks her to come to Muju. Since Mi-Na now has two months of free time, she finally decides to go there to sell her father's stationary store. The decrepit old store has now been closed for an extended period of time and Mi-Na now has to bring it back to life to sell it once and for all. Meanwhile, Kang-Ho (Bong Tae-Gyu) returns to Muju to work as an elementary school teacher. He grew up there and had only one friend.

How to Watch Happiness for Sale Legally and Safely

If you want to stream Happiness for Sale through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Happiness for Sale films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.