The casts of Zenescope's flagship series - Grimm Fairy Tales, Robyn Hood, and Hellchild - unite for an event to end all comic book events... the apocalypse. As Marian and the witches unite to launch a massive attack against the Four Horsemen of the Apocalypse, Robyn must place her trust in the murderous Cindy to escape a perilous situation. The stakes have never been higher as the heroes and villains of the Grimm Universe are put to the test!