Macbeth

In scene I of Macbeth, he has encountered the three witches that tell him he has different titles.  Because one of them calls him the King, it is assumed that he will take that role in the future.  This future, however, contradicts with Macbeth's character, as he is loyal and trustworthy.  Lady Macbeth soon realizes that in order for him to become king, he must overthrow the current one, proving the contradiction that must be made.  Regardless, she realized that doing so would be an evil deed that could change Macbeth's traits entirely, but she was willing to see him succeed.  She would then be responsible for supporting Macbeth's evil deed.  Unfortunately, this shows that Lady Macbeth is much more easily tempted to sin than her husband, showing that mayhem that could unfold.  This could cause problems between the husband, wife, and king.  The story can only get more chaotic as it progresses, considering the thoughts going through their minds, tempting them to commit heinous acts.