One order of takeout ignited the countdown to doomsday.
Chen Xi, an ordinary delivery boy, was forced to take a life-changing order to save his sister. From this, he stepped into the backside of the world: dimensions are collapsing and monsters are growing in the dark.
While escaping, he discovered that he and his sister were actually the final experimental subjects of the "Immunity Project" - he was a "living antibody" that would lose his human form, and his sister was the only "anchor" that locked his humanity.
And this desperate fate had been written by their "deceased" parents before they were born.
The countdown hangs high: 10 years and 11 months.
Every time he gets stronger, the "human" part of him dies a little bit.
From the ruins of the city to overseas factories, amid pursuit and betrayal, he must complete this last delivery - even if the end point is the end of the world or the end of himself.
When saving the world, you need to become a monster first.
Will you still accept this order?