Zhao Zi Hui and his elder brother Zhao Zi Yue were born and raised in Harbor City. One day, Zi Yue discovers the existence of an alien species and abruptly leaves their home. A few years later, Zi Hui still can’t find peace as his brother’s disappearance comes back to haunt him.

Di Xin Hui Xiang,
Dì Xīn Huí Xiǎng,
Echo From the Earth’s Core,
地心回響