this episode introduce u to the formal dress uniform wear here by captain picard and commander riker and and lieutenant tasha yar . the plot of this episode deal with 2 group of separate alien delegate and the anticans and the selae who try to capture and eat each other at every turn . the 2 side really hate each other and and it be up to riker and tasha to contain them and keep them out of trouble . meanwhile a mysterious spacial anomaly go around the ship injuring and kill a few of the crew member . but at the end of the episode this same spacial anomaly possess a valuable member of the crowd . will they be able to rescue him so that they maybe able to continue on with their on go mission of space exploration . note represent this episode mark irish actor colm meaney second appearance on tng after encounter at farpoint . he portray one of tasha yellow shirt security guard .