ANDI MACK - "Tomorrow Starts Today" - Andi's family life is thrown for a loop when her big sister, the freewheeling Bex, returns home on the eve of her 13th birthday. It begins with Bex arranging for Andi to train for Ultimate Frisbee with the cutest guy at school, Jonah Beck, who she learns has a high school age girlfriend, Amber.  Andi also grapples with telling her best friends Buffy and Cyrus some big news, but is preoccupied making Jonah Beck a bracelet, at his request.  Meanwhile, Cyrus becomes the Space Otters' official Enthusiastic Supporter, helps them win their first game. This episode of Andi Mack airs Friday, April 07 (8:30  9:30 P.M. EDT) on Disney Channel. (Disney Channel via Getty Images)