Mouri, Ran, and Conan go on a skiing trip. Conan looks like a Santa elf in a striped stocking cap. (see below) He and Ran have a lot of fun skiing down the mountain like freaky people and pushing Mouri into a tree. Then they get invited to a short, bald, rich guy with an acorn head’s house party, with a bunch of doctors. (also see below) One of them goes to buy groceries, another goes night skiing alone, another goes to take a bath, and the last one goes to take out the garbage. Meanwhile, Acorn Head is watching a TV drama when suddenly he is attacked. Someone punctured both of his lungs so that he couldn’t breath, and left him to die. Needless to say, it was very gruesome. Then the girl who went to get groceries comes back, but she couldn’t get ice cream or salad. She was the murderer and killed him because he stole her thesis. In the end, she blames the ice cream for the reason why she was caught.