I saw both of these movies when they first aired on Nick. In Big Time Movie, Big Time Rush goes to London to start their first world tour. But before they can hit the stage and "Elevate" London, they have to help defeat the evil Sir Atticus Moon. There are also some great Beatles covers.
Rags is a gender reversed Cinderella. Max Schneider portrays Charlie, an orphan with a great voice. Keke Palmer is Kadee, a pop star who no one listens to. They cross paths and become best friends.