The 30 top elites of Blue Star traveled to the same Liang Dynasty era together. They have an internal "traveler mutual aid group" to share information, and each is bound to a different "time/event exchange system". Only Li Mu, who is the protagonist but is bound to the most useless [leave system] (nothing can be changed, it can only allow him to take leave at any time and not go to court), is the type to embarrass the time travellers. However, as the group of friends died one after another in order to transform the world or fight against the divine power, their system points and coupons would be dispersed through the system rules, and the useless Li Mu became the only one with huge "system fragment resources". He discovered that he could use "vouchers" from different people to create outrageous effects like cross-time and space logistics and plot rewriting.
