You should watch:

The First Duty

This was episode number 19 of season 5.

The following characters appeared in this episode:

(uncredited)Cadet

(uncredited) Ensign Jae

Admiral Brand

Cadet First Class Nicholas Locarno

Boothby

Captain Satelk

Captain Jean-Luc Picard

Counselor Deanna Troi

Commander Wiliam T Riker

Doctor Beverly Crusher

Jean Hajar

Lieutenant Worf

Lt Cmdr Albert

Lt Commander Data

Lt Commander Geordi La Forge

Sito Jaxa

Wesley Crusher