"Brightest Day" is the name of a crossover event first published by DC Comics in 2010, as well as a year-long comic book maxi-series that began in April 2010. The story follows the ending of the series Blackest Night and how the aftermath of these events affects the entire DC Universe.
At the end of "Blackest Night", 12 heroes and villains were resurrected for some unknown purpose. The events of Brightest Day follow the exploits of these heroes and villains as they attempt to learn the secret behind their salvation.