The second part of the Best Friends Cup starts, with Pure Palette taking their turn turn to face the challenges before them.

Aine is given the opportunity to debut a new premium rare dress for Sugar Melody. However with only three days to complete the dress before the debut concert, Aine struggles to find ideas.

Sakuya and Kaguya appear on TV with Aine and her friends and afterwards are given the task of producing a video tour of their home. Aine and the others offer to help and end up discovering a treasure map that leads to some treasure the twins buried when they were younger. The girls feel that going on a treasure hunt and filming it would make a much better video, but Sakuya and Kaguya are reluctant to go and find what they buried.