Yun Fu meets a gentle lover through online dating, but he is always unwilling to meet her in person. Just as she angrily suggests breaking up, she unexpectedly gets caught up in a trial that requires her to clear a mysterious realm. With traps hidden throughout the stages, she must rely on her intelligence and composure to overcome each challenge. To her surprise, the powerful guardian she encounters inside the realm is none other than Sirius, her online boyfriend. While concealing their identities and working together to face the challenges, they gradually uncover the secrets surrounding each other. Through repeated trials, Yun Fu continues to grow and transform, while Sirius remains steadfast in protecting her. Together, they walk side by side and find genuine love.