 A team of scientists led by Hashimoto has managed to capture the energy of a ghost child, thanks to their newly invented device called Menger Sponge. The child, isolated in an empty flat, moves his lips to words no one understands. Hashimoto enlists special agent Ye Qi-Dong, who is able to read on lips, in order to figure out how this child can shed light on life...and especially life after death...