On the "isolated island" where human memories are stored, Lin Mo, the watcher numbered 734, lived an isolated life until a woman named Su Qing broke in and requested to extract a forbidden memory classified as top secret - S-001, in order to awaken her comatose brother. During the investigation, Lin Mo was horrified to discover that this memory was not only related to a covered up disaster, but also closely connected to his erased past. When duty conflicts with truth, and forgetting versus remembering, he must make a choice: remain a loyal watcher, or become a rebel who uncovers the island's dark secrets?
