After losing her memory, Jin Jiaming returns to her hometown for treatment.
Before she boards her flight out of the capital, the boyfriend who promised to accompany her is nowhere to be seen.
Instead, Jiang Baichuan, her younger brother from her foster family, shows up.
After three months in humid southern Fujian, she hasn't recovered a single memory.
But Jin Jiaming finds herself caught in a dilemma:
First, her boyfriend contacts her less and less.
Second, seeing Jiang Baichuan wake up in the same room as her every day, she feels their sibling bond is about to cross a line.
*
Jiang Baichuan has loved his older sister for years, but has always been held back by social convention.
Until his sister loses her memory.
Reunited with a guileless Jiaming, he smiles gently and steps in to take his brother-in-law's place.
Content warnings and reading guide:
* Both leads are virgins; the female lead is two years older than the male lead.
* The female lead and male lead are not on the same household registration.
* The female lead will recover her memories later.
Theme: Love at first sight can last and last