The story begins on the high school campus, where there are ignorant feelings that are sour and sweet like lime soda, pure friendship, and the youthful look of fighting for dreams. As they grow up, the protagonists enter college and then the city. The neon lights of the city are like a sea, bright but also complicated. In it, they experience academic advancement, workplace challenges, and emotional entanglements and transformations. From the small world of campus to the big stage of the city, the protagonists explore themselves and chase their dreams amidst the excitement of youth and the grinding of reality. They also write chapters about growth, love and the future in the aftertaste of lime soda and the light and shadow of the neon sea.