Casey trips at school on the staircase (and takes it out on innocent bystanders) after Derek insults her.
Derek can't stop laughing as he and his best friend, Sam, look on.
George and Nora promise to stay upstairs, but break the promise and come down to crash the party, and they end up being cool among Derek's friends, which does not sit well with Derek. A handsome boy walks in accidentally, looking for the bathroom.
He asks her if she's found what she's looking for, and Casey, lovestruck, tells this new boy Max that she thinks she has.
Casey discovers she has a reputation as a grade-grubber and wants to rid herself of it by choosing a slacker to work with on a group assignment – like Derek.
Meanwhile, this is an open chance for Derek to throw a party.
When George declines the request, Derek informs him it's a party for Casey to meet the finalists Kendra prepared for Casey to choose a date from, Nora has to intervene George's second response of 'No' to make the party happen.
Derek and Casey have a competition with who is the best sister or brother.
However Lizzie has a problem playing hockey and Derek is the only one who could be her trainer and seeing as Derek is always with Lizzie, Edwin asks Casey for help about girls. Sam and Casey have been going through many make-up break-up phases, meanwhile Derek gets to go to a trip to Sweden if they win a sports game which Sam wins all the points, he only wants to go for the girls.