"Soul Link" is a 12-episode anime series set in a near-future where humanity has established a space station, Aries, orbiting Earth. The story unfolds as a group of cadets from the Central Military Academy, including siblings Ryota and Nanao, embark on a training mission aboard the Aries. The mission takes a dark turn when the station is attacked by a terrorist organization, the Space Revolutionary Army, seeking to destabilize Earth's government. The cadets find themselves trapped on the station, cut off from communication with Earth, and must navigate the chaos while uncovering the terrorists' motives.

The narrative explores themes of survival, trust, and the psychological strain of isolation. As the cadets struggle to maintain order, tensions rise among the group, exacerbated by the presence of a mysterious virus that begins to infect the station's crew. The virus causes hallucinations and erratic behavior, further complicating their efforts to survive. Central to the plot is the relationship between Ryota and Nanao, whose bond is tested as they confront the unfolding crisis. Other key characters include Shizuru, a skilled and composed cadet, and Akari, a childhood friend of Ryota, whose loyalty and emotional resilience play pivotal roles in the group's dynamics.

The series delves into the backstories of several characters, revealing personal motivations and connections that influence their actions. As the cadets uncover the terrorists' true objectives, they must make difficult choices to protect themselves and the station. The story builds toward a climactic confrontation, blending elements of science fiction, psychological drama, and action. The resolution ties together the central conflicts while leaving room for reflection on the consequences of their decisions. "Soul Link" presents a compact, character-driven narrative set against the backdrop of a high-stakes survival scenario in space.