The swimming coach, Matías, acts as a catalyst for the breakdown of Lucero’s family—his presence and actions escalate existing tensions until everything unravels.
How Matías Triggers the Family’s Disintegration
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Discontent exposed — Lucero is unhappy in her marriage, despite having wealth, children, and public success. Matías enters while she’s emotionally vulnerable, and their affair exposes fissures in her relationship with her husband and her dissatisfaction with her domestic life. Source: Netflix’s synopsis and plot summaries.
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Triangle with her daughter — The situation becomes especially volatile when Viviana, Lucero’s daughter, also develops feelings for Matías. This introduces rivalry, envy, and betrayal between mother and daughter, turning an illicit affair into a triangular conflict that fractures familial trust. Source: Ending-explained analysis.
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Career and secrecy at risk — Lucero’s affair with Matías threatens not just her marriage, but her career and reputation because of the secrets she must keep. She increasingly has to navigate deceit—within her household, toward her husband, and in her public life. Source: Netflix media center description.
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Fatal climax — In the final act, jealousy, betrayal, and fear come to a head. A sequence of actions—including Lucero’s suppression of the affair, her daughter’s confrontation, Matías’ mounting desperation—ends in Matías’ death. Lucero herself drowns him, while every family member contributes to the chain of events that permits his demise. What begins as desire ends in blood. Source: Ending explanation from MacObserver.
Matías therefore does more than just have an affair; he destabilizes Lucero’s family structure, forcing secrets into the open and pushing each character—mother, daughter, husband—into reactive roles. His involvement turns internal dissatisfaction into outward collapse.
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