In the series finale, Amy graduates from high school and reminisces, pondering over her relationships with Ricky and Ben. Meanwhile, Grace thinks about what Jack means to her; and Adrian’s spirits are lifted by a surprising visitor.
Ricky gets upset when he discovers the meaning behind the date Amy selected for their wedding day. Meanwhile, Anne feels disconnected from her family and bonds with Kathleen; Ethan and Kathy quarrel; and Leo worries that Ben has become fixated on Amy.
Amy and Ricky set a new wedding date, but their loved ones have doubts about them following through. Meanwhile, Grace has doubts after accepting Jack’s proposal; George’s and Kathleen’s moms make surprise visits; and Ethan grows jealous of Brian.
Ethan doubts the practicality of algebra until he meets Danica McKellar. Elsewhere, Ben advises Amy to end her relationship with Ricky; an unexpected guest crashes George and Kathleen’s romantic evening; and Mrs. Stone talks to Grace about Jack.
Amy tours a college campus in New York. Meanwhile, Ricky reexamines his feelings for Clementine; Jack takes extreme measures in the name of safety; Adrian’s displeased when Omar doesn’t invite her on his business trip; and George embarks on a new career.
Omar asks for Adrian’s hand in marriage. Meanwhile, Ben realizes he may have been wrong about his first love; Amy and Ricky open up to Dr. Fields; a restless Jack wants Grace’s assistance; and George and David talk about Robie’s paternity.
Amy finds what she believes to be the perfect wedding dress at a thrift store; Ethan wants to fly to Texas to talk to Kathy’s parents; Anne questions Robie’s paternity; George and Kathleen meet celebrity Chaz Bono.