Act I: Colliding Worlds and the Hazing Scandal (Episodes 1–6)
Ki Seon-gyeom discovers that younger sprinter Kim Woo-sik has been assaulted by senior team members. When coaches and athletic officials collude to hide the incident to protect the team's standing and preserve Assemblyman Ki's political campaign, Seon-gyeom takes drastic action. He assaults the perpetrators himself, demanding a formal disciplinary hearing to ensure the abuse becomes public record. When the committee issues a minor punishment to maintain appearances, Seon-gyeom holds a public press conference and announces his retirement from the sport, stepping away from the track and forfeiting his career.
Act II: Vulnerability and Realignment (Episodes 7–12)
Unmoored from athletics, Seon-gyeom stays near Mi-joo and starts supporting Kim Woo-sik’s recovery. Meanwhile, Seo Dan-ah commissions a painting from art student Lee Yeong-hwa. Yeong-hwa sees through Dan-ah's haughty corporate facade, provoking an emotional response from her. Assemblyman Ki Jeong-do attempts to meddle in Seon-gyeom’s personal life, tracking down Mi-joo and attempting to buy her off. Recognizing the Assemblyman's attempts to undermine her dignity, Mi-joo breaks up with Seon-gyeom, refusing to diminish herself for a relationship.
Act III: Resolution and Open Horizons (Episodes 13–16)
Seon-gyeom realizes that breaking free from his father requires taking active responsibility for his choices rather than merely living passively. He confronts his father, stands beside Kim Woo-sik until the junior athlete can run again, and resolves to build a new career as an independent sports agent. Mi-joo and Seon-gyeom reunite on terms of mutual equality and open dialogue. In the secondary storyline, Dan-ah's father passes away, leading to corporate reorganization. While Dan-ah and Yeong-hwa part ways romantically due to their differing worlds, their affection remains an honest, transformative chapter in both their lives. The series concludes without melodrama: the four protagonists gather around a casual table with their friends, recognizing that there is no final 'The End' in life—only the daily commitment to keep moving forward.