 Set in the 24th century , the series follows the adventures of the Starfleet crew of the Federation starship Enterprise @-@ D. In this episode , the crew are sent to open diplomatic ties with the Jaradan . While taking a break from preparations , a computer malfunction traps Captain Jean @-@ Luc Picard ( Patrick Stewart ) , Lt. Cmdr. Data ( Brent Spiner ) , and Dr. Beverly Crusher ( Gates McFadden ) in a 1940s @-@ style gangster holodeck program with Captain Picard playing the role of detective Dixon Hill . 
