Feliz Cumpleaños (2014)

Carmen is a single mother who lives with Victor, her son who's turning 18 years old. During his birthday party, Victor gives Sara methamphetamine in exchange for a kiss, the situation gets out of control and Sara loses consciousness. Victor turns to Carmen looking for a way out. Confused and terrified, they think Sara dead and decide to bury her in the patio of their home. During the burial, they surprisingly discover that Sara is still alive. Carmen must then wipe out any evidence that might ruin their lives.