A girl bargains with the devil to escape one cage, only to walk straight into another. The man she actually loves is the one person the entire world, supernatural and human alike, has decided she cannot have. Every episode is her choosing him anyway, consequences be damned.

Giovinetta is being pushed into a marriage she does not want. Hoping to get out of it, she makes a wish to the devil to rescue her, with no idea what her choice will set in motion. What she really wants is to be with the one man she is forbidden to love. The ten-episode ONA is a steamy romantic drama with a fantasy edge, where a forbidden romance meets the consequences of calling on the devil.