Battle for Happiness S01 E01 Episode 1

"She died for someone's happiness."

While selecting the winners for a social media event, Jang Mi-ho gets in touch with Yu-jin, a bad relationship from her past. Meanwhile, Yu-jin is cornered by other moms who suspect her of lying for the main role in a play. One day, Mi-ho shows up in front of Yu-jin and fearing that her past will be discovered, Yu-jin gives money to Mi-ho to silence her.