Hotori Arashiyama has a love for mysteries but finds herself puzzled by the cycle of one problem leading to another. When she is forced to work at the Seaside Maid Cafe to pay off debt after school, her friend Toshiko luckily knows how to run the cafe. However, Toshiko initially shows no interest in working until she learns Hotori's childhood friend, Hiroyuki, is a regular. But things are not as they seem as Hiroyuki secretly likes Hotori who secretly has a crush on someone else. Aside from this love triangle, Hotori also faces drama, angst with her math teacher, table tennis with her classmates, and her younger brother's conflict with the school's bad girl. Despite everything threatening to come crashing down, Hotori's life continues in a hilariously forward direction.