The story revolves around the life of Eliana, a girl who was born with a black snake attached to her back.

The reptile wraps itself around her hand every time she experience extreme emotions like sadness or anger.

However, she also meets her rival, Margarita, who is Julian's model-girlfriend and unknown to everyone, her half sister.

[1] Screenwriter, Des Garbes Severino conceptualized and developed the series in mid-2011, initially titled as Serpentina.

On February 11, 2013 the four main characters underwent "snake workshop" with two Mexican black kingsnakes.