Tang Jinyu has a white moonlight—a legendary figure every hacking novice admires. One day, after reading a semi-biographical book tarnishing his idol's image, Xiao Tang angrily threw it aside… and ended up transmigrating into the story. A book separated two worlds: one in the 5G era, the other where streets echoed with *"Thank You for Your Love 1999."* Seventeen-year-old high schooler Tang Jinyu shrank into a tiny child. Struggling onto a stool to peek outside the security door, he saw his idol walk past, schoolbag slung over his shoulder… He was living next door to his idol!! =口=