Sakamata Chloe receives an unexpected job offer from a company she never applied to and, tempted by the salary, follows it to a suspicious new workplace. There she meets Secret Society holoX: Takane Lui, Hakui Koyori, Kazama Iroha, and leader La+ Darknesss, an eccentric group with ambitions of world domination and very limited resources. The series follows how the five members come together and begin turning their unusual organization into a real team.