It's been several months since the events in Volume Three transpired. Alana is working as an actor for some kind of lame super hero soap opera, while Marko is a stay-at-home dad. Hazel is a rambunctious toddler. Marko's mom and Izabel the ghost nanny still live with them too. The whole situation is extremely stressful and putting a definite strain on their relationship. There are temptations which cloud their judgement and make them forget that they're a team. Kudos to Vaughn for bringing in an element of everyday life to the story.
Prince Robot IV is trying to find himself—more like he's losing himself—on the pleasure planet, Sextillion. Not only is he spoiled in the material sense, but in an emotional sense as well. Meanwhile, his wife has given birth to their son. We learn that not everyone on their world is as fortunate as the royal family, and the story takes on a decidedly dark turn.
The Will is still in the hospital, lost in a hallucinatory dreamscape. Gwendolyn and Sophie are out looking for a cure and run into The Brand, who is out seeking revenge for what happened to her brother. Not nearly enough Lying Cat in this issue!
There's the usual sex and graphic violence, but there's a birth mixed in with all the death. The artwork continues to be excellent, but here it's not so much about the fantastic elements as it is capturing the everyday and encapsulating a character's emotional state with just a single frame.