Captain Hikaru Sulu of the U. S. S. Excelsior becomes embroiled in a series of conflicts involving the Klingons, the Romulans and the Interstellar Concordium in the Ensebaran Nebula.Captain Hikaru Sulu of the U. S. S. Excelsior becomes embroiled in a series of conflicts involving the Klingons, the Romulans and the Interstellar Concordium in the Ensebaran Nebula.Captain Hikaru Sulu of the U. S. S. Excelsior becomes embroiled in a series of conflicts involving the Klingons, the Romulans and the Interstellar Concordium in the Ensebaran Nebula.