Travel Across Time and Space

Future 2035 Human beings have finally broken the rules of time and space. "Isn't this kind of technology only seen in movies and novels?" The doctor developed the first machine that can travel between the past and the future, but when they really stepped into another time and space, dangers and puzzles followed one after another - they encountered countless crises along the way, and a stranger with unknown origins and a mysterious identity appeared. Who is he? Where are you from? This is where an out-of-control time travel begins.