Sakusa's birthday is coming up and Hinata, Bokuto and Atsumu want to celebrate it, but they are quickly shut down by Sakusa who doesn't want them to do anything. But how could they not? Convincing themselves that what Sakusa wants is a surprise birthday party, they take it upon themselves to prepare the best birthday party for him, expecting to give him an unforgettable birthday. Whit this three in charge he is definitely in for a good surprise, but will it be a pleasant surprise? Can this chaotic squad actually manage to pull this off? After all, what could go wrong with just a birthday party, right...?