Ai Sato has spent years as the sole engineer maintaining her company’s entire internal software system, working as a one-person operation to keep everything running smoothly. Despite being the indispensable linchpin of the company’s technical infrastructure, she is suddenly laid off without warning. The reason given by the new CEO is surprisingly petty: disapproval of her hobby of cosplaying at work. Depressed and suddenly jobless, Ai finds herself at a loss for what to do next.

While searching for new opportunities, Ai unexpectedly reunites with her childhood friend, Kenta Suzuki. Kenta is running a startup called True Coding School, a small but ambitious business that provides personalized coding lessons to people struggling under the pressures and expectations of modern society. Recognizing Ai’s immense skill and unconventional teaching potential, he offers her a position on his team. Together, they set out to help students who have lost their sense of purpose.

The students Ai encounters are far from typical programming learners. Her first student is a beleaguered salaryman who hopes that learning to code will help him improve his strained relationship with his family. Other recruits include a harried woman determined to prove her professional worth in a demanding work environment and a jobless young person seeking to fulfill a beloved mother’s dream. Each student struggles with unique personal challenges, from societal expectations to crises of confidence. Through passionate and often unconventional lectures, Ai teaches them not only the technical skills of software development but also how to rebuild their self-esteem and find renewed meaning in their lives. As she pours her expertise into transforming the lives of her students, Ai discovers that being fired may have been the opportunity she never knew she needed. The series follows her journey of turning a sudden setback into a fulfilling new career, one coding lesson at a time.