In this Sweet Sixteen Story, Mary-Kate gets an intern job on a website, but someone in the office is out to get her. Meanwhile Ashley's busy setting up a matchmaking website, but it doesn't always work out as planned! Mary-Kate is thrilled when she lands an internship working on a magazine - her first real job! She gets to write articles and go on photo shoots, but there's a problem: someone keeps sabotaging her projects and giving her the wrong information so she gets into trouble with the boss. Who is it, and how can Mary-Kate let the boss know the mistakes aren't her fault? Ashley is working on a matchmaking website, but who is the anonymous 'Mysterio' who's sent in his details and asked her to find him a girlfriend? It's vital she finds out - because according to her matchmaking system, he's a perfect partner for Ashley! And at the same time and they have to organise a surprise sweet sixteen party for their friend Brittany and save their favourite cafe, Click, from closing down - another action-packed Mary-Kate and Ashley story!