Protagonist Li Yu takes over a scenic area guesthouse and is worrying about operational difficulties when a strong man in ancient costume holding a whistle staff arrives at the door, who turns out to be the time-traveling Wu Song. He initially thinks it is a tourist cosplay, but unexpectedly opens the door of time and space teleportation. Wu Song brings ancient silver ingots, causing quite a few modern blunders, and after that, various ancient heroes successively visit the guesthouse. The protagonist manages the guesthouse business while hosting various visitors from different worlds, uses modern knowledge to help the ancients, and also reaps unique adventures, staging fun stories of ancient and modern collision.