A love story of scientist Yang Lanhang and Bai Lingling, both in the virtual and real worlds. After meeting online in their youth, Yang returns to China to become a doctoral student at T University, where he unexpectedly reunites with Bai, the online friend he's long admired. After disrupting her thesis defense, he works to make amends by continuing their online friendship and bringing her into his lab. As they grow closer and resolve misunderstandings, they face challenges together and develop a deep connection.