The protagonist crossed because of a plane crash, and many years later he found out that this was a world that collected various film and television dramas, animations, and novels, and at that moment he thought he had mastered the wealth code, until he met an old guy named John Price, and found out in a cold sweat that the world was jumping repeatedly on the brink of nuclear war. I can't make it up, in fact, I just don't have a book to read, so I try to write one myself.