In 2147 AD, the Human Federation was losing ground in the war with the Zerg. Tang Chen, an alien scavenger who was sent to an interstellar garbage dump, accidentally discovered a "causal calculator" from an ancient civilization - it can deduce the causal chain of the development of any event, but every time it is used, it consumes life.
When the Zerg army approached the city, the top federal officials fell into internal fighting. Tang Chen relied on the causal calculator to piece together the remains of ancient war machines in the garbage, and step by step revealed the shocking secret hidden behind this war that lasted for hundreds of years: The reason why the Zerg evolved faster than imagined was because someone was secretly transmitting human genetic data to it.
The mastermind behind all this is Lin Xiao, the youngest general of the Federation - a cheater who appears to have great military exploits, but actually rises to power by stealing other people's research results. When Lin Xiao discovered that Tang Chen had the power to overturn the situation of the war, a life-and-death game between truth and lies began.
In this battle of wits, Tang Chen not only had to face the threat of the Zerg, but also had to deal with the network of lies carefully woven by Lin Xiao. Every causal deduction is an overdraft of one's own life; every revelation of the truth means that a deeper conspiracy has surfaced.
And the ultimate weapon from ancient civilization buried deep in the garbage dump may be the only hope to turn the tide of the war...
