"Sol Bianca" is a science fiction anime series set in a distant future where humanity has colonized numerous planets across the galaxy. The story revolves around the crew of the Sol Bianca, a highly advanced and heavily armed spaceship. The crew consists of five women, each with distinct skills and backgrounds, who operate as space pirates. Their primary objective is to acquire valuable artifacts and treasures, often through daring heists and confrontations with rival factions.

The central narrative begins when the crew intercepts a distress signal from a derelict spaceship. Investigating the signal, they discover a young boy named Feb, who possesses a mysterious pendant. This pendant is revealed to be a key to an ancient and powerful artifact known as the "Gess," which holds significant historical and technological importance. The crew of the Sol Bianca decides to protect Feb and uncover the secrets of the Gess, setting off a chain of events that pits them against powerful adversaries, including the Earth Federation and other pirate groups.

The main characters include April, the skilled and determined captain of the Sol Bianca; Janny, the hot-headed and impulsive pilot; May, the calm and analytical navigator; June, the resourceful engineer; and Feb, the young boy whose pendant becomes the catalyst for the crew's adventures. Each character contributes uniquely to the group's dynamic, with their interactions and personal histories adding depth to the narrative.

As the series progresses, the crew faces numerous challenges, including intense space battles, intricate political machinations, and moral dilemmas. The pursuit of the Gess leads them to uncover hidden truths about their own pasts and the broader history of the galaxy. The story explores themes of loyalty, survival, and the quest for knowledge, all set against the backdrop of a richly detailed futuristic universe.

"Sol Bianca" is notable for its blend of action, adventure, and character-driven storytelling. The series balances high-stakes space opera elements with intimate moments of character development, creating a compelling narrative that appeals to fans of science fiction and adventure genres. The plot's progression is marked by a series of escalating conflicts and revelations, culminating in a resolution that ties together the various threads of the story while leaving room for further exploration of the Sol Bianca's universe.