Who says her kids get to have all the fun? Kris takes her shot at the spotlight when she is approached to join the L.A. Sparks 'Ole Skool' Dance Crew, but she quickly becomes overwhelmed when the rehearsals are way more than she bargained for. Plus, when her hubby Bruce tags along for moral support, will he end up stealing the spotlight? Also, a knee injury threatens to sideline Kris from the team permanently. Will she be able to recover in time? Meanwhile, the Kardashian sisters give Kendall a crash course on puberty and boys when they believe that she is on the brink of womanhood.