When the earth becomes a secret room, can you escape from it?

In the future world where the universe is highly civilized and interstellar navigation is free, a meteor shower destroyed half of the earth. In the name of protecting the earth, the high-level force Galaxy Eye launched the "Sky Wall Project". Unexpectedly, once the sky wall rises, it can never be opened again. And this is just the tip of the iceberg, and a bigger disaster is still brewing. The young Mai Dang firmly believes that no matter how terrible the predicament is, there is hope only if you rush out!

(Source: Youtube, translated)