In the vibrant and sun-soaked backdrop of Ibiza, "White Lines" weaves a tale of mystery, crime, and the dark undercurrents of the party scene. The story follows Laura Haddock as Zoe Walker, a woman who embarks on a quest to uncover the truth behind her brother's mysterious disappearance, which occurred decades earlier. As she delves into the island's hedonistic lifestyle, she encounters a web of secrets and lies that challenge her perception of love, loyalty, and betrayal.

Zoe's journey introduces her to a diverse cast of characters, including Nuno Lopes as the enigmatic local who offers both insight and danger, and Marta Milans, a friend whose ties to the underworld deepen the intrigue. The series captures the seductive allure of Ibiza while exploring deeper themes of grief and the search for identity amidst chaos. Tension builds as Zoe must navigate her brother's past connections, which intertwine with the lives of those she meets, leading to a gripping confrontation with the truth.

Blending elements of crime and thriller, "White Lines" presents a fast-paced narrative punctuated by moments of raw emotion and stunning visuals, inviting viewers into a world where every party could be hiding a deadly secret.