The 35-year-old Ji Jun was laid off on a rainy night. After crying to sleep, he returned to his college year. She is not omniscient - only when the smell, light, shadow or sentence coincides with the past life, the memory fragments will stab back, accompanied by dizziness and errors. She uses the insight and execution of a 35-year-old to relearn choices, repair relationships on campus, keep the spotlight of her best friend Xu Ni, and become an "anchor" with the introverted and precocious Lu Chenzhou. Every change comes with a price. What she wants to do is not to make a comeback, but to make her life more stable and brighter.