After an emergency doctor, Jiang Nuan, travels back in time to a village girl of the same name in 1975 after a car accident, she discovers that the original owner was abused, and at the same time activates the spiritual spring space in the jade bracelet on her wrist. Jiang Nuan gets acquainted with Gu Chaoyang, a soldier who retired from the army due to injury, and uses spiritual spring water to relieve his pain. The two met and understood each other in simpler times, as well as their psychological struggles and choices when facing the truth of their identities.