Chicago, 1928: In the stifling summer heat three disturbing events take place: a clique of city leaders is poisoned, a white gangster is found mutilated and a famous heiress vanishes without a trace. Detectives Michael Talbot and Ida Davis are hired to find the missing heiress, but it proves harder than expected and so, Ida must elicit the help of her friend Louis Armstrong. But will any of them find the answers they need in the capital of jazz, booze and corruption?