Takami Chika is a second-year high school student at Uranohoshi Girls' Academy, located on the coast of Numazu in Shizuoka Prefecture. When Chika and classmate You go to Akihabara one day, Chika learns about a school girls idol group called “μ's” (pronounced "Muse"). Mesmerized by the idol group's glamor, she then decides to set up a school idol club at her school... Differing from the first instalment, which set its stage in subculture hub Akihabara, this instalment of the hit teen school drama is set in a quiet coastal town.