A man is found stabbed in the early morning. Very quickly, everything leads Panda and Lola to a place: the Hacienda, a seaside bar known for its delirious karaoke evenings. So the Hacienda, little paradise? Panda doesn't believe it. And what's better than a box bar where alcohol flows to untie the tongues? Panda and Lola infiltrate undercover.

The AquaParadise... Its wave pool and its "magic river" with at the edge... a corpse! The wife of the water park owner. A few steps away, an abandoned baby: that of the housekeeper! First suspect? No, witness to the crime scene and victim of a kidnapping! Panda and Lola now have a homicide, a kidnapping and a baby on their arms.