In 2055, a huge ship sails across an endless ocean.
Several young men in sharp black suits surround a hunched old man.
“Chief Engineer You, are you really not coming home with us?”
A middle-aged man with a square face and an air of righteousness asks anxiously.
“I want to return to my motherland too, to put down roots where I belong. I miss the air of home so much, and all those lovely smiling faces,” the old man says wistfully.
Suddenly, he straightens his back, his expression solemn. “But I know too much. I’ve been involved in too much.
“The Americans won’t just watch me leave. I’m nearing the end of my life, and I’ve devoted it all to the laboratory.
“I yearn to one day satisfy the desires of that pack of beasts.
“But beasts are driven by nothing but their instincts. Or, to put it another way, those who aren’t of our kind will inevitably bring harm to our people.” The old man gazes at the deep ocean.
Then he murmurs, “Xiao Ling, you’ve inherited eight-tenths of my knowledge. Take my notes back to our motherland. I’ll give my life to protect you. Remember, the country will always stand behind us. Our families are worth protecting for a lifetime!”