Voyager encounters a scientist seeking redemption for creating a weapon that destroyed many lives.
Whether or not you like this, I think, depends on your feelings about Neelix. He is a character that has generated some negative reaction, not always justified, but this episode's portrayal does not work for me.
The story has a good, thought-provoking premise, but I do not think it translates as well on the screen as it should. Mainly because it takes a very serious subject which parallels real life people and events, puts one of the lighter characters at the centre of it and subjects you to forty minutes of antagonism that you know will be resolved eventually.
Some of the exchanges between Neelix and Jetrel work, such as when Jetrel talks about his wife and family, but for the majority of the episode it is Neelix acting hostile as you wait for a relatively predictable explanation from Kes about the root cause of Neelix's anger. This also further cements my unwillingness to accept her character having any romantic inclination towards him.
I think Ethan Phillips is a good actor, but does not have the best material to work with. Some of the dialogue is overly poetic and feels almost unintentionally funny at times. James Sloyan, a dependable Star Trek character actor, is great as always.