She stumbled upon him three years ago when he was on his way from work and she was almost dead, in a pathetic condition. He took her to his house and took care of her and when she was fine she didn't told him how she got those wounds and nothing about her past but still he felt something for her and she felt it too, a spark between them and they soon got married.
Now three years have passed and both of them are living happy life. He is a mechanic and owns a garage in a small town where they lives together and she is a kindergarten teacher at a local school.
Everything was going fine until they returned for her, her enemies and her own dad's workers. She used to be world's best thief but she retired, and ran away three years ago, and she has to go, if she want her husband alive and that's what she chose.
For him, she is dead because he saw his house burning, and a woman's body was found in the house, who was just like her, and now he wants to avenge her.
That's a basic plot and I'll love to talk about it with someone. If you're interested please dm me.