1965, Hong Kong. Cheng Weilan, an eight-year-old dock girl, was sent to the Tang family in Mid-levels after her father Cheng Haisheng saved a ship, and became the companion of the sickly young master Tang Ruiqi. One is a weed growing up in the salty sea breeze, and the other is a lonely bird trapped in a wheelchair and a medicine jar. They play chess under the wisteria flower stand and form a bond across class.
However, the peaceful years were torn apart by undercurrents. Wei Lan discovers that her father's shipwreck was not a natural disaster, but a murder committed by the Tang family's second uncle Tang Qiming in collusion with Macau's old faction; the truth behind Ruiqi's lingering on the sickbed turned out to be the chronic poisoning of her relatives over several years. In order to protect Pier 3, avenge their father, and uncover the shady story of a wealthy family, three teenagers with different backgrounds - the dock girl Wei Lan, the sickly young master Ruiqi, and the urban boy He Wenlei (later Zhang Zhenlei, the heir to the Macau Zhang family) - were forced to be involved in the whirlpool of business wars, conspiracy and blood.
From the fish egg stall in Shek Tong Tsui to the chess game in Mid-Levels, from the shootout at the Lisboa Hotel to the storm in Cape Horn, they spent ten years carving a light between the iron and steel walls of class. When justice is finally achieved, the promise made back then comes to be fulfilled.
Intention: Class is not a prison for destiny, love and perseverance can cut through copper and iron walls. When the dock meets the mountain, when the chess pieces learn to play chess, the three teenagers use their backbones to support their own harbor in the stormy waves of the times. This is not only a love story, but also an epic story of a generation navigating through difficulties.