Raquel, portrayed by Clara Galle, begins to narrate her life story, sharing an experience in her classroom where she hesitates to read her assignment due to a lack of courage to express herself. She reflects that her tale truly begins at her home, a modest dwelling overshadowed by the opulence of the nearby Hidalgo mansion. The Hidalgos, her neighbors, symbolize a stark contrast to her humble lifestyle, operating Alpha 3, one of the most powerful companies in the country and situated in Barcelona's most striking building.
The core of this saga revolves around the three Hidalgo brothers: Artemis (Eric Masip), Ares (Julio Peña), and Apolo (Hugo Arbues). Raquel harbors an intense, albeit unspoken, fascination for Ares. She meticulously gathers details about his life from the shadows, but her feelings remain concealed. One day, Apolo expresses his gratitude for using her Wi-Fi, leading Raquel to discover that Ares has hacked her computer and stolen its password. Between conversations with her best friends, Yoshi (Guillermo Lasheras) and Daniela (Natalia Azahara), she recounts her awkward interaction with Ares, drawing mixed reactions from her friends.
On an eventful day, Raquel decides to follow Ares into a secluded area after a rainstorm halts the game, confronting him about his intrusion into her computer. During their exchange, Ares playfully writes a code on her hand, identifying himself as "Ares, Greek God". This moment sparks a connection, leading Raquel to admit her feelings for him. Seeking control, she unplugs her Wi-Fi, but Ares unexpectedly climbs through her window to reconnect it, transforming the scene into a steamy encounter that leaves Raquel craving more.
When Ares invites Raquel to a party, a game of seduction unfolds, with her cleverly denying him what he seeks, explaining that "karma comes around." Raquel later finds herself reluctantly helping Apolo when he drunkenly expresses his affection for Daniela. After a night filled with secrets and desires, Ares and Raquel's relationship intensifies, despite the complications that arise.
Following a series of passionate exchanges, Ares unexpectedly sends Raquel a new phone as a gift, which she perceives as insensitive. Determined to return it, she finds herself entangled in another intimate moment with him, only to leave feeling used. As more events transpire, Raquel struggles without Ares during some difficult times and finds herself surrounded by her loyal friends, Yoshi and Daniela, trying to move on.
Amid broken dreams and misunderstandings, Ares admits to Raquel that he has been pushing her away, revealing that his life was predetermined by his father – a path not meant for love. However, when Ares faces familial pressure regarding his relationship with Raquel during a family gathering, their relationship is put to the test. A key conversation with her mother inspires Raquel to be courageous and honest about her feelings, but fate takes a drastic turn when jealousy erupts, leading to a confrontation involving Yoshi and Ares.
In a shocking climax, an altercation leads Ares to fall into a pool, triggering a life-threatening situation due to his allergies. Raquel rushes to rescue him, showcasing her true feelings. Following his recovery, Ares is granted the freedom to pursue his passions, opting to study medicine in Stockholm. At the airport, he confesses that the initial disruption of her Wi-Fi was all part of his plan to engage with her.
As Raquel musters the courage to share her own narrative, she ultimately publishes her book titled Through My Window, reflecting the growth she experienced throughout her tumultuous relationship with Ares. The story concludes with a sense of hope as we see Ares return, climbing through her window to surprise her, suggesting that their journey together is far from over.