Ep 21. Before and After

Ensign Kim and Kes participate in a Krenim ceremony, celebrating their upcoming wedding. However, Kes begins to experience temporal distortions, which lead her to jump chronologically backwards and forwards in time. The crew discovers that Kes is moving backwards through her life, and will eventually die from old age. The only way to save her life is to find a way to reverse the temporal distortions and restore her to normal time. Meanwhile, Voyager continues its journey through Krenim space, facing off against the Krenim weapon ship and its deadly temporal powers. As Kes moves closer and closer to her death, the crew must work quickly and creatively to find a solution before it's too late.