Players will assume the role of Grandchild, returning to the Four Four South Village, a military village of  in Taipei. By exploring the environment and objects within the SVVR-rendered village setting and conversing with a generative AI Grandfather character, players will inquire about his past memories to cross-reference information and piece together clues through deduction. This quest aims to recover the lost videotape from Grandfather's past while uncovering the history and culture of the military villages. This experience aims to cultivate players' information integration and interpretation skills by blending narrative, immersive gameplay, and interactive elements.