"Gekijō-ban Haikyu!! Shōsha to Haisha" is a compilation film that condenses the events of the first two seasons of the "Haikyu!!" anime series, focusing on the journey of the Karasuno High School volleyball team. The narrative centers on Shoyo Hinata, a passionate and determined first-year student with a natural talent for jumping and a deep love for volleyball. Despite his short stature, Hinata aspires to become a top-tier player, inspired by a professional athlete known as the "Little Giant." His path crosses with Tobio Kageyama, a prodigious setter with exceptional skills but a reputation for being difficult to work with due to his demanding nature.

The story begins with Hinata and Kageyama facing each other as rivals in middle school, where Kageyama's team defeats Hinata's. Both players join Karasuno High School, initially clashing due to their contrasting personalities and approaches to the game. However, they eventually form a powerful partnership, combining Hinata's speed and agility with Kageyama's precision and strategic mindset. This dynamic duo becomes the driving force behind Karasuno's resurgence as a competitive team.

The film highlights key matches and character development moments, including the team's intense rivalry with Aoba Johsai, led by Kageyama's former teammate, Toru Oikawa. It also explores the growth of other team members, such as Daichi Sawamura, the steadfast captain; Koshi Sugawara, the supportive vice-captain; and Asahi Azumane, the team's ace spiker who struggles with self-doubt. The narrative emphasizes themes of teamwork, perseverance, and overcoming personal challenges as Karasuno battles to reclaim its former glory and earn a spot in the national tournament.

Through its condensed format, the film captures the essence of the series, showcasing the highs and lows of competitive sports and the camaraderie that binds the Karasuno team together. It serves as both a recap for existing fans and an accessible entry point for newcomers to the "Haikyu!!" universe.