This playful experimental documentary is testing out technology and at the same time diving into personal history and politics. Trying out his new paddle, Tianji is reminded of his college friend, Bin, with whom he played ping-pong together when they were students. Just as he considers reaching out, he discovers a social media post of Bin that makes him hesitate. Seeking clarity and guidance, Tianji talks to an AI voice assistant, but instead of answers, their dialogue pulls him deeper into memories and emotions.