A possible concise summary is:
- A man loses his wallet and meets a stuttering motorbike taxi driver who offers to help him find it and teach him English.
- A teacher gets fired from his school because of gangsters who are after him and meets a debt collector who wants him to tutor his son.
- A girl sells banh mi and has a crush on a newspaper seller who is friends with two troublemakers.
- The troublemakers get into a fight with the gangsters and the teacher intervenes, but gets knocked out by the debt collector.
- The girl's cart is destroyed by the gangsters and the motorbike taxi driver tries to help her.
Here are the key facts extracted from the text:
1. The text appears to be a dialogue from a movie or TV show, with multiple scenes and characters.
2. The story involves a teacher who is trying to teach English to a motorbike taxi driver.
3. The teacher is also looking for a room to rent and is offered a place to stay by a man who owns a coffee shop.
4. The coffee shop owner has a son who is not interested in studying and is more interested in fighting.
5. The teacher is offered a 5-star classroom to teach the son, but it is actually an abandoned coffee shop.
6. The teacher agrees to teach the son and is offered a place to stay in the coffee shop owner's house.
7. There are several scenes of violence and confrontation, including a fight between the teacher and some gangsters.
8. The teacher is accused of being a gangster, but denies it.
9. The story also involves a woman who owns a cart and is being harassed by some men who are trying to collect a debt from her.
10. The teacher tries to intervene and help the woman, but ends up getting into a fight with the men.
It's worth noting that the text is quite fragmented and it's not always clear what is happening or how the different scenes are connected.