Right up front, "Day" unleashes two outer-space anomalies on earth: a planet-endangering asteroid and a CG flying saucer, which sends a big glob of glowing goo smashing through Porky and Daffy's roof.

Early on, the young BFFs Daffy and Porky are instructed by a creepy character that if they “stick together,” all will turn out right for them. Sticking is a major motif here, as an alien goo ...