Cai Wu was an ordinary college student until an accident took her life. As her consciousness began to fade, a mysterious voice offered her a chance: become a System task-taker and travel through countless fictional worlds to make up for others' regrets or change their fates. Hoping for a chance to be reborn, Cai Wu accepted the contract and began her quick transmigration journey.
In every world, Cai Wu must face a different challenge. In an ancient palace, she must help a falsely accused empress clear her name. In a modern city, she must help an illegitimate daughter cast aside by her family reclaim what is rightfully hers. In the interstellar era, she must prevent a war that could bring about humanity's extinction. As she completes her missions, Cai Wu gradually accumulates all kinds of skills and knowledge. She slowly recovers her emotions and humanity, transforming from an emotionally detached "tool" into a person again.
However, as her missions grow more involved, Cai Wu discovers that the System is not as simple as it seems. It appears to be hiding a secret. Meanwhile, her actions in the various worlds have attracted the attention of certain entities, which begin interfering with her missions and even threatening her life. Cai Wu must complete the System's tasks while uncovering the truth about the System and the real reason for her death.
In the end, Cai Wu discovers that the System was created by a powerful being known as the Weaver of Fate, whose purpose is to collect energy from all the different worlds to sustain its existence. Cai Wu was chosen because her soul has a special ability: she can change predetermined destinies. Facing this final boss, Cai Wu must use the skills and knowledge she has gained across the worlds, along with the help of the allies she has made, to fight a final battle that will determine the fate of countless worlds.
Theme: Every world has its own rules of operation and laws of physics.