In the fruit-themed city of Orchard Bay, every fruit person receives a "sweetness rating" upon birth.
The female lead Luna Lemon is a low-sweetness lemon girl who is rejected by everyone.
She was fostered in the warehouse district of the juice giant Golden Orchard Group from childhood, nominally as an adopted daughter but in reality as a hidden experimental subject.
On the day of the engagement party, she found out that her fiancé Adrian Apple had never truly loved her.
Together with the fake rich daughter Bella Peach, he used her acidic gene to stabilize the new product formula, planning to send her to the pomace processing plant after the press conference to completely destroy all evidence of her existence.
All the fruit people say she's too sour, too cheap, and not fit for decent company.
Little do they know, what truly keeps all the juices from Golden Orchard fresh is not the sweetness of peaches, but the tartness of Luna.
Before being dumped into the pomace bin, Luna secretly took away a drop of core stock solution and a copy of an old DNA report.
Three years later, she returned as the founder of the mysterious brand Sour Crown.
