A boy on the edge of adolescence fears his mother might be a robot; a psychotically depressed woman is entrusted with taking her niece and nephew trick-or-treating; a reluctant dad brings his baby to a coke-fueled party; a teenage boy tries to prevent his mother from putting his estranged father's dogs to sleep. Ranging from a youth arts camp to an aging punk band's reunion tour, from a dystopian future where parents no longer exist to a ferociously independent bookstore, "Last Day on Earth" revolves around the endlessly complex, frequently surreal system that is family