The story is set in the future world, in a huge high-tech adult theme park, there are lifelike machine "receptionists" who allow visitors to indulge in lust, violence and other desires. The main story is about the future theme park called "Westworld". It provides visitors with the satisfaction of killing and sexual desire. But under this world, various undercurrents are surging. Some robots have awakened themselves and found that they only exist as characters in the story, and want to get rid of the control of the park; the management of the park is afraid that the creator of the park controls everything in the park and tries to seize control of it, but the creator of the park will not give up and explore the mysteries left by his partner creator; and an executive who bought the park tries to rediscover the mysteries left by the journey of that year.