Snake may not be the nicest guy you ever met, but he has his own code of honor, and he does everything in his power to live up to it. Keeping his hands off his Sergeant's sister-in-law, no matter how sexy she is, is definitely in the code.
Wren has the hots for Snake but is frustrated that he can't seem to see her as anything other than Dee's kid sister. When she sees him sneak out after dark, she suspects he's going to meet a lover and follows him, determined to finally make him see her as the mature sexy woman she is.
Unfortunately, things don't go exactly according to plan. She manages to get herself captured and Snake is forced to come to her rescue.