Andi, Bowie, Bex are surprised by an impromptu visit by Bowie's mother. While hanging out with T.J.'s friends, Cyrus faces a dangerous situation. Buffy and Jonah learn a secret about their school principal.
Andi becomes friends with Jonah's new girlfriend; Buffy is excited to learn the girls' basketball team has a talented player; Cyrus tries to keep avoiding T.J.
Andi and Walker realize how much they have in common when they spend the day together. Buffy steps up to lead the team in T.J.'s place when he is side-lined.
After much preparation and planning, Cyrus' Bar Mitzvah festivities commence. Andi and her friends and family all join him in the celebration, which is full of landmark events for more than just Cyrus.
Feeling left out by her friends, Andi spends time with Amber. Andi and Celia pick out Bex's wedding cake. Bowie helps a guitar student break some bad news.
Andi and her friends and family gather to celebrate the Harvest Moon Festival, but Jonah's mishap may spoil the evening; Celia attempts to one-up her sister, Mei, by announcing a special event.