Y & Y is a visually powerful graphic novel. In this post-apocalyptic narrative, we follow two children who find themselves alone in their city, now deserted after it was destroyed by a war that is not clearly identified in the novel. They decide to explore the city. They roam the ruins, visiting, or re-visiting places that many children, and adults, take for granted as part of their daily city life. A toy store, a grocery store, an amusement park, a library, a school, a flower shop, a train station, a theater, a museum, and a beach.

Their wandering brings new insights into their lives. They develop a new perspective when they see familiar places deserted and in ruins, all theirs with no one else but also semi-destroyed. The debris are eye-openers for them, especially when they eventually reach a point where they must decide their next step.