I think We Deliver is a pretty good catchphrase. I assume the plot is the cops are working undercover in a pizzeria on a case like this one.
The case recalled a big drug-smuggling operation in the late 1970's and early 1980's referred to as the Pizza Connection. In that case pizza parlors in New York, New Jersey, Long Island and the Midwest were used to distribute heroin brought into the United States by Sicilian gangsters.
The authorities said that in the current case, as in the Pizza Connection, a pizza parlor was employed as a meeting place for arranging wholesale transactions, not as a retail outlet where addicts could buy bags of heroin. In the previous case, the pizza parlors, which appeared to be legitimate food shops, also provided a channel for depositing earnings from drugs into bank accounts in the guise of pizza profits.