The Mayor of Newark, New Jersey, is hosting an event for the kids to provide book bags and school supplies for the upcoming school year. To add to the important day, Buddy makes a cake to celebrate! Madeline meets with the organizers of a 5K race called the Colour Run. They want a bright and cheery cake with an added surprise of tie-dye on the inside! Madeline plans to participate in the race and brings along her sister Mary to deliver the cake to the finish line.