Ye Yu, a mad scientist from the earth, lost consciousness during another spacewalk, and when he woke up again, he was on an alien spaceship---the Doomsday Ark. This ark will accompany Ye Yu on a journey to find the passage On the way to the earth, he will come into contact with various interstellar civilizations along the way, revealing and researching unknown phenomena that have never been discovered before, black holes, white dwarfs, red dwarfs, high-dimensional space, soul technology, sailing across the river system, super-light speed Sailing and so on... In short, this is the story of a mad scientist looking for the earth in the vast sea of ​​stars!