It sounds like you're looking for a recap or a story based on the K-drama My Strange Hero
"School ki deewaron mein sirf sikhate nahi hain... kabhi kabhi qaid bhi karte hain. Aur aaj... main qaid todne aaya hoon." (The school walls don't just teach... sometimes they imprison. And today... I've come to break the prison.) mystrangeherohindidubbed720pseason1epis better
If you follow the guidelines above (check sync, resolution, community feedback), you can find a version — one that’s watchable, complete, and enjoyable. It sounds like you're looking for a recap
The show follows Kang Bok-su, a student who was wrongfully accused of violence and expelled from high school. Years later, he returns to the same school as an adult to seek revenge, only to find himself entangled in unexpected circumstances and a rekindled romance with his first love, who is now a teacher there. How to Watch in Hindi main qaid todne aaya hoon