Ben Jones is a seventeen year old boy attending a prestigious high school in Boston. Last year his sister Yukiko disappeared without a trace, until one day when walking home from school he meets a mysterious little girl in the park that looks just like his sister the same day he lost her. Every day after meeting her he spends his time getting to know her and learning more about what happened to my sister, but as time passes strange events begin to occur reviling clues towards his sisters disappearance.