She is an experimental subject designed as a "key" by her family, and the necklace around her neck hides her mother's last warning; he is a "chess piece" controlled by a wealthy family, and the scars on his wrists are engraved with the secrets left by his grandfather. When a well-planned marriage bound the two into a community of destiny with a "symbiosis agreement", the trajectories of Xia Wanxing and Ling Chen started from the misplaced star path and crashed into the spark mystery that had been dusty for twenty years.
The blue light of the laboratory explosion, the Thorn Star Map in the underground altar, the deep blue technology that devoured everything... The "Starfire Embers" awakened by Xia Wanxing on the verge of death resonated with the "Thorn Star Map" sleeping in Lingchen's bloodline, revealing a conspiracy spanning two generations: It turns out that one of them is the container of "Starfire" and the other is the key to the "Star Gate", and this sacrifice ceremony that began in 1943 has already welded the fate of the two people to the gears of fate.
The life-and-death protection in the heavy rain, the desperate counterattack under the dark river, the shocking secret of the star map under the lake... When the symbiotic link tears apart the veil of lies, they are shocked to realize that the most dangerous enemy may not be the covetous Deep Blue forces, but the "guardian" instinct hidden deep in the bloodline that even they are unaware of.
The embers of the spark will eventually be rekindled, and the thorn map will eventually guide the way home. But when the trajectory of fate finally stops misaligning, what they have to face is the undercurrent that destroys everything after the Star Gate opens, or... The cluster of starlight called "bond" that has never been extinguished in each other's eyes?
