With their end of year B-PROJECT JAPAN Dome concert approaching, the members of B-PRO enthusiastically work together to plan a comprehensive concert. Meanwhile, the busy Yashamaru remains absent and unable to meet with Tsubasa or the members. Tsubasa begins to feel that something is off as she encounters one puzzling problem after another on B-PRO`s jobs. Later, the song the group was meant to debut at the Dome is heard playing in the city...?!