In 1914, the United States had transitioned from the Gilded Age to the Progressive Age, enjoying 40 years of peace and a comfortable environment, and was the world's most powerful nation.

As world war looms, the curtain slowly rises on a golden age of emerging aviation industry, and a time traveler arrives.

What mark can it leave in this turbulent era?

In 1920, the 18th Amendment to the U.S. Constitution—Prohibition—officially took effect. Jesse Lindsay, transported to Chicago, built his "beverage" business during the Roaring Twenties. At that time, Al Capone, the underground emperor, was just taking his first steps towards dominating Chicago. As the iron fist of the Great Depression slammed into the bubble of false prosperity, Jesse Lindsay's name had already resounded throughout North America!

An art student travels back in time to the reigning prince of the House of Orleans, coinciding with the American Civil War of 1861. How will he capitalize on the Civil War to secure his first fortune and launch his grand enterprise? How will he navigate the oceans to signal his return during the Franco-Prussian War of 1870? How will Britain, Germany, Austria, Italy, and Russia fight their way out of Western Europe's monstrous chamber? Can the Mediterranean become his inland sea? See how the protagonist becomes a global hegemon and spreads his influence across the globe!

Travel back in time to 19th-century Greece and witness his rise from a small Balkan nation. Lead Greece to its great ideals, restore the glory of Rome, and make the name of "Rome" known from Ireland to Khitan! And this is Constantine, the only sun of the Balkan Peninsula, the heir of Komnenos, the second Aristotle, the world's restorer, the Turkic butcher, and the loving father of the Roman people: Rome has only one chance to be revived. If you don't seize it, then let me do it!