In 1910, Paris, France. Cinema projectionist Emiland his friend Rohrcame to a scientist’s laboratory to deliver the goods. The scientist happened to be away, and the two of them randomly moved the medicines in the laboratory. The result was chaos and even worse. A little flea became huge and turned into a terrifying monster. The monster flea escaped from the laboratory, causing a riot and panic in Paris. In fact, this flea is gentle and innocent, with a pure heart. It happened to meet the beautiful bar singer Lu Hillvoiced, hence the name Franca. Franca has an amazing musical talent, and his performance with Lucy is welcomed by people.
On the other hand, the greedy police chief wants to destroy the monster to increase his prestige. In order to protect Franca, Emile, Roll and Lucy work together.
