Summary: When Mario and his friends return to Isle Delfino to receive a valuable gift; the Golden Mushroom. Upon arrival, they discover that the Mushroom has been stolen. When murder strikes, everyone seems to have an alibi.
Chapter 1
"There it is!" exclaimed Mario. Below the airplane, Mario, Luigi and Peach looked down from the airplane. The Isle Delfino Airstrip lay below them. On the runway, Toadsworth, Toad and Yoshi were getting out of their jet. Waluigi and Wario were there too. Once Mario's jet landed, they got their baggage and checked into Hotel Delfino. Each one of them got a different room (Mario and Yoshi got room 201, Luigi got 202, Peach got 203, Toadsworth got 204, Toad got 205, Wario got 206 and Waluigi got 207). That night, Luigi had not been able to sleep. He walked out of his room, then saw a dark figure quietly running down the hall. Later that morning, Luigi told Mario, Toad, Toadsworth and Peach what he saw. "Was he holding anything?" asked Peach.
"I think so, it looked like a really big paintbrush." replied Luigi.
"This isin't the first time we saw someone with a paintbrush..." commented Mario. "We should go check the safe the Golden Mushroom is in."