The series gets darker (and more interesting) as Captain Lorca assigns Crewman Michael Burnam to attempt to find a use for the creature they captured in Episode 3. Meanwhile, the Klingnots* choose to raid the fallen Star Ship Shenzhou to deal with the needs of their own damaged vessel.
Episode 4 continues revealing the dark corners of the Starship Discovery and building on the characters within. (Really enjoying this crew.)
On the flipside the Klingnots have some internal struggles if their own. (A storyline I am finding not very interesting at all.)
Late To The Game 10/8/17
*This series still has potential but I really hate the Klingnots. They could have literally been anything else and it would have worked fine. So until there is a better explanation for their new look It will refer to them as Klingnots.