All your friends finally got a chance to relax from fighting to save Earth, and decide to throw a Christmas party, since it is December

Usagi: "Ahhh, Christmas eve!^^"

Makoto: "Heh, you seem very excited"

Ami: "Well, to be fair, Mako, it is the first time we get to relax from being guardians"

Rei: "Ami does have a point"

Minako: "Ohh! Girls, I just got an idea! How about we host a Christmas party??!"

Chibiusa: "Oooh, I like parties"