Andi's world turns upside down when her older sister, Bex, returns home on her 13th birthday and reveals a family secret.

Andi decides to keep the news about Bex from her friends.

Andi gets in trouble for the first time at school.

Bex throws Andi a house party!

Andi's upset when Buffy and Bex spend time together.

Andi tells Jonah about seeing Amber with another guy.

Bex and Cyrus have news for Andi.

Andi must adjust to Bowie being in her life full time.

Jonah asks Andi to help him pick out a gift for Amber.

Andi and Bex adjust to their new living arrangement.

Bex helps Andi stand up against the new dress code.

Amber fails to defend Jonah when her friends mock him.

Andi encourages Bowie to plan a future with Bex; Cyrus introduces his girlfriend, Iris, to Andi and Buffy; Jonah invites Andi to the Space Otters' party.

Andi invites Jonah to her Chinese New Year celebration, which gets awkward when Celia’s sister Aunt Mei visits. Buffy signs up for the boys’ basketball team tryouts.

Andi tries to convince her friends to find a new hangout spot to avoid Amber at The Spoon. Buffy tries out for the boys’ basketball team.

Andi learns more about her past on the anniversary of the day Bex left home. Jonah attempts to teach Cyrus how to skateboard.

Andi invites Amber over for a sleepover. Buffy is frustrated when the basketball team captain TJ excludes her from gameplay.

Andi takes a stand when students are divided into two groups, and one group receives preferential treatment at her school. Andi also learns AndiShack is in jeopardy.

Andi and Jonah go on a double date with Buffy and Marty to an arcade; meanwhile, Cyrus decides to shoot a movie with Bex's encouragement.

When Andi and Celia spend more time together, Bex feels jealous; Buffy agrees to tutor TJ if he agrees to pass her the ball on the court.

Andi questions her relationship with Jonah; after a discouraging talk with Amber, Andi enlists Buffy and Cyrus to investigate.

Andi and Bex plan a surprise party for Bowie's birthday; Jonah joins Andi, Cyrus and Buffy on their annual trip to the Renaissance Faire.

Andi and Bex discover that Bowie may be seeing someone; Cyrus is selected to make a video for the school, but realizes he may be better behind the camera.

Andi is left confused when Jonah stops wearing the bracelet and tells her he doesn’t like labels. At her basketball game, Buffy finally gets what she has been hoping for.

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.

Jonah tries to express his feelings for Andi through gifts, which proves not to be his forte. Buffy reveals she has to move, and Andi devises a plan for her to stay.

With a week to go until Buffy moves, Andi seeks to recreate the "perfect" day that she, Buffy and Cyrus experienced years ago, which included their first alpine slide.

When the power goes out in Shadyside, a day of fun and games shed light on unexpected revelations.

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.

A special craft project goes missing when Andi agrees to let Miranda’s daughter spend the day at AndiShack. Jonah confides in Buffy and Cyrus.

Jonah finds a way to tell Andi how much he truly likes being around her; Walker continues to make a positive impression on Andi and her friends.

Andi, Cyrus and Jonah put together a farewell gift for Buffy before her last day in Shadyside.

Andi and Cyrus miss Buffy and can't reach her after her move; Andi receives a handmade gift from Walker that upsets Jonah.

Ham reveals surprising news to Andi and Bex. Jonah tries out for a regional league Ultimate team.

Andi runs into Walker at an art fair, and he meets Jonah for the first time. Bowie’s relationship with Miranda hits a snag.

Andi and Jonah go on their first date where she learns some sad news. Bex and Celia prepare for the grand opening of their business.

Andi and Bex plan a special dinner for Bowie, but unexpected company drops in to crash the party.