Time Plank Road

The universe is heading towards heat death. Humanity has built its last city next to the black hole at the center of the Milky Way. In order to find a new future, they launched a project that will last 1.2 Million years - the Time Plank Road. They dropped their anchor in time and extended step by step into the past of the universe. Until young anchorman Lin discovered an old anchor deep in the plank road. That anchor is older than human civilization. They finally realized: I am not the first civilization to walk on the plank of time.