Adriana had always been told she has a stepbrother, and at the age of 16, she makes contact with him because of his mother and her stepbrother's grandma, who adores her as if she were her true grandchild. Adriana is unable to understand the way her brother's grandmothers want her and Sebastian ("step brother") to get close, but she communicates with him via massages and phone conversations thanks to her mother and Sebastian's grandma. They communicate in this manner because they are separated in different countries. But are they really siblings?