The male protagonist travels through time and land, uses modern knowledge to solve the flash flood crisis, sees through the poisoning conspiracy, and saves the affected people. He meets the female protagonist for the first time. The two work together tacitly to resolve the epidemic crisis, and get the first evidence that the prince has framed him. Finally, he returns to Beijing under the order. The identity of the female protagonist is foreshadowed, and the relationship between the two sprouts.
