The Earth Defense Club at Binan High School (Yumoto Hakone, En Yufuin, Atsushi Kinugawa, Io Naruko and Ryuu Zaou) who regularly attend a local bathhouse run by Yumoto's brother, are approached by a strange pink wombat-like being from another planet who charges them (rather involuntarily) with the task of saving the world. Using a set of "Loveracelets" he gives them, the group transforms into Battle Lovers, who use the power of love to combat foes intent on spreading hate and discord. As they battle, they encounter the Earth Conquest Club under the influence of a small green hedgehog-like creature named Zundar; student council members Kinshiro Kusatsu, Ibushi Arima and Akoya Gero become their enemies who are also responsible for creating the monsters the Lovers fight.
