Joey is still mad at Chandler. Monica has lunch with Richard after running into him on the street and doesn't feel anything. Everybody decides to go to Vegas to surprise Joey except Rachel and Ross, who will go out together a day later. Phoebe keeps score with the Vegas trip vs. the London trip (which she didn't get to go on). Chandler and Monica celebrate their one-year anniversary on the plane while Phoebe accidentally tells him about Monica's lunch with Richard. Rachel uses the empty apartment to walk around naked but Ross can see and thinks she's baiting him. Both are embarrassed when he goes across the street. The gang runs into Joey dressed as a gladiator at the casino. Monica and Chandler argue. Joey meets his identical "hand twin." Rachel and Ross keep trying to embarrass each other. After seeing Monica happy (winning at dice) after Phoebe told him she was unhappy, Chandler walks away.