Pretty Cristina Quadri's upper-middle-class parents have showered her with the best things in life. She seems to be made in their image: a well-groomed, obedient student. She looks askance at Angelica, an outspoken girl who challenges the teacher's gloss on Argentine history; it's whispered she's the daughter of "desaparaceidos" who were made to vanish by the military in the '70s. But Cristina's self-assurance is challenged when she's suddenly called out of class and taken under escort to a courthouse. A federal judge and social worker tell her they have proof, based on a blood test, that her real name is Sofia Lombardi and she is the daughter of activists who disappeared in the '70s. Cristina grows panicky and demands a chance to talk to her parents, but the judge forbids it. Instead he introduces her to her birth grandmother, Elisa. Cristina bolts from the room and runs. Under the law, however, her foster parents -- who begin to appear in a more sinister light -- cannot see her without the judge's permission. She's forced to move in with Elisa, a kind and cultured woman who has been searching for her since she was born. Though Cristina feels no ties to her new family, she slowly begins to question her identity, and continues to search to find out the truth about her birth and her parents' fate.