Charles' father, Lansford Ingalls, doesn't want to live after his wife dies. Charles brings his father to Walnut Grove to help him out. When Laura's horse gets hurt, she blames her grandpa.

Mr. Ingalls is severely delayed when a wheel breaks on his wagon in the pouring rain. This is the day of Charles and Caroline's wedding anniversary. Everything had been all prepared and set up for that day. When Charles doesn't show up in time, Caroline tells the children how hard it was to get Charles to notice her and how many heartbreaks she had before she finally knew that Charles loved her.

When Albert continually breaks the law, Charles takes him out of the big city and back to Walnut Grove. Albert doesn't change in Walnut Grove because he is addicted to morphine. Charles finally forces Albert to stop using morphine. He stays with Albert while he goes through withdrawal. Thanks to Charles, Albert is no longer addicted to morphine. We find out at the end of the show that Albert will become Dr. Albert Ingalls.