He is an elite assault soldier in the San Diego SWAT team!

He was a top-notch precision marksman in the German army who was active on the Western Front during World War I!

He is a top-notch spy who emerged from the WWII X-Agent Training Camp!

He is a legendary explorer of the American West, the uncrowned king of the Caribbean, and the strongest counter-terrorism expert in single combat...

Before achieving all these numerous titles, Zhang Xuan was just a lowly police officer whose soul had transmigrated to northern Myanmar.

His most urgent task is:

Get stronger and stronger in the dungeons!

And then... live on in reality!