Mary Margaret and Tony are paired as partners for a school dance contest, leading Brian to help the kids practice. When Tony unexpectedly decides to quit the competition, Mary Margaret is upset when she is faced with not having to compete without a partner. Meanwhile, after Lou advises Angela to stay home and recuperate after she injures her knee during tennis practice, her friends decide to sneak her out the house without him knowing; Dianne eventually discovers that Angela has been faking her injury since her knee healed three days earlier in order to spend some much-needed time with her friends, leading Angela to admit what she did to Lou, which leads him to let her decide whether she wants to be a regular teenager or continue her training to be a tennis star.