Amy and Ricky announce they will get married the day after Amy graduates from high school, but everyone is skeptical that the wedding will actually happen. Grace and Jack announce their engagement, but it's soon clear that Grace is having second thoughts about her decision. George and Kathleen are distracted from their secret plans when their mothers arrive for unexpected visits, but they eventually include their families in a special surprise. Meanwhile, Ethan is jealous when Kathy agrees to help Brian prepare for the spelling bee.

High school graduation is finally here, prompting everyone to reminisce about how much their lives have changed over the past few years. Amy's relationships with Ricky and Ben weigh heavily on her mind, while Grace contemplates Jack's place in her life. Meanwhile, Adrian is ecstatic when an unexpected visitor knocks on her door.