When she meets Jeremy, her husband-to-be, Katie learns that he has been married before and has a child.
When she agreed to become his wife, she realized that little Landon and his mother would be a part of her life whether she wanted it or not.

The groom’s ex-wife and her current husband were invited to the wedding, a situation that stunned many of those present.
But that’s not all. As she wrote her vows, Katie made sure to include Casey and Tyler, the boy’s mother, and her current husband.

As she said her vows, she looked at the groom’s ex-wife and asked her to stand.
Nobody expected what would follow.
With tears in her eyes, the bride promised her that she would do everything in her power to be the best stepmother to her child.
After fulfilling that promise, Katie knelt down and turned to Landon.

She promised her that she would do her best to be with him and that she would take care of him as if she were her son.