Angry Mom season 1 is available in: Korean [Original] on Netflix Japan
When Jo Gang-Ja attended high school, she was notorious for fighting. She gave birth to her daughter A-Ran in her late teens and became more responsible. Her daughter A-Ran is now a high school student, but A-Ran is bullied at school. Jo Gang-Ja decides to go back to high school to protect her daughter. Jo Gang-Ja becomes a high school student again.
A badass mom goes undercover as a high school student to find the bully who traumatized her teenage daughter and exact revenge.