`Grease is the word` in this Sweet Sixteen story! MaryKate and Ashley are working on a school production of Grease, but it`s tricky: the sets get ruined, the costumes need to be redone and one of the leading actors is having trouble with the script! MaryKate is VP of the drama club, and is determined that their production of Grease is going to be the best show ever! Her boyfriend, Jake, has joined the club so she`ll see more of him and everything is looking good but then disaster strikes. The set is flooded out, so it has to be redone, the costumes are a total disaster and have to be remade, and how can she help Sam, who has dyslexia and has trouble reading, learn his lines in time for the big night? Ashley, meanwhile, has a huge shock when she runs (literally!) into her exboyfriend Ben, who`s a new student at her school. She`s really pleased to see him and they agree to be `just friends`. So why does she feel so jealous when she sees him kissing her friend, Lauren? Would she really try to flirt with her best friend`s boyfriend!?