4-20: The Omega Directive
Upon detecting an omega molecule, Voyager must locate and destroy it before disastrous repercussions.
4-14: Message in a Bottle
The Doctor is sent to the Alpha Quadrant through an alien relay network, arriving aboard a Starfleet vessel commandeered by Romulans.
Voyager is confronted by the Hirogen after usings their ancient network of relay stations to retrieve letters from home.