Okay kiddo, so a drug treatment and rehabilitation center is a place where people who have been using drugs can go to get better. It's like a special hospital for people who are sick from drugs.
This center is called 'mega' because it is really big and has lots of rooms and beds for people to stay in. It's not like a regular hospital where people just stay for one or two nights, they stay there for a long time to get better.
In the mega drug treatment and rehabilitation center, there are people called doctors and nurses who help the patients. They give them medicine and talk to them about their problems.
In this center, people who are addicted to drugs can get help to stop using them. They can learn new ways to cope with their feelings and find things to do that make them happy without drugs.
The people there also learn how to take care of their bodies and minds, and how to live a healthy lifestyle without drugs. This means they might do things like exercise, eat healthy foods, and go to counseling sessions.
So, in summary, a mega drug treatment and rehabilitation center is like a really big hospital for people who have been using drugs, where doctors and nurses help them get better and teach them how to live a good life without drugs.