Zashono Academy is a big educational institution with approximately 35,000 students enrolled in all grades. Densuke Mifune, a plain and unpopular student, enrolls in high school here. While he is looking forward to fitting in, his plans are derailed when he meets Chiharu Shinonome, an extremely gorgeous and intellectual girl who has captivated the attention of all the pupils at the school. Kirika Misono, who saw the two's interaction, forces them into joining her mysterious "Eiken Club" to compete in the school's annual club competition. Densuke becomes increasingly close with his fellow club members as a result of the event, but will he be able to keep his cool or will he succumb to their brazen advances?