“They All Fall Down” – Hosted by Janelle James, four teams of contestants compete in an epic battle against gravity and physics as they attempt to remove items from towering, themed stacks. In round one, a pair of best friends who are planning the girls’ trip of their dreams tries to defeat two competitive brothers on the kids’ room stack. In round two, a couple here to put their love to the test takes on a pair of musical theater classmates, who are used to performing under pressure, on the wedding stack. The winners from each round face off against the pirates’ stack to earn a shot at The Mega Stack for a chance to win the grand prize of $250,000 on the season finale of “The Final Straw,” airing SUNDAY, SEPT. 18 (10:00-11:00 p.m. EDT), on ABC. Watch episodes on demand and on Hulu the day following their premieres.