"Pilot Candidate" is a 12-episode anime series set in a futuristic world where humanity faces constant threats from mysterious alien entities known as the Victim. These creatures emerge from a dimensional rift called the Gate, and humanity's only defense lies in advanced humanoid robots called Ingrids, piloted by skilled individuals known as Gottes. The story centers on Zero Enna, a young boy who arrives at the Gottes training academy, Kakitama, with no memory of his past but an innate talent for piloting Ingrids.

Zero is immediately thrust into the rigorous training program alongside other cadets, including his peers Kizna, El, and Sarasa. Each cadet possesses unique abilities and personalities, contributing to the dynamics of their interactions and growth. Zero's natural aptitude for piloting quickly sets him apart, but his lack of discipline and understanding of teamwork creates friction with both his instructors and fellow trainees. The series explores the challenges of mastering the Ingrids, which require not only technical skill but also a deep emotional and mental connection between pilot and machine.

As Zero progresses through the academy, he begins to uncover fragments of his forgotten past, which are intertwined with the origins of the Victim and the Gate. The narrative delves into the broader conflict between humanity and the Victim, revealing the stakes of the war and the sacrifices required to protect the world. The series balances Zero's personal journey of self-discovery with the larger-scale battles against the alien threat, creating a blend of character-driven drama and action-packed sequences.

The supporting cast plays a significant role in shaping the story. Kizna, a determined and disciplined cadet, serves as a foil to Zero's impulsive nature, while El and Sarasa provide emotional depth and camaraderie. The instructors, particularly Commander Rufus, offer guidance and insight into the complexities of the war and the responsibilities of being a Gott. The relationships between the characters evolve as they face increasingly dangerous missions, highlighting themes of trust, perseverance, and the cost of survival.

"Pilot Candidate" combines elements of mecha action, science fiction, and coming-of-age drama, presenting a narrative that explores both personal and collective struggles in a world under siege. The series concludes with an open-ended resolution, leaving room for further exploration of its universe and characters.