Crimson Vow continues the new Innistrad storyline begun in Innistrad: Midnight Hunt. As humanity turned to the hope of rituals and a Harvesttide festival to save them from the Eternal Night in Midnight Hunt, those that stalk from the shadows aren't just the mindless zombies and frenetic werewolves, but also the eternally undead with calculating, grand designs of their own. This set features the biggest vampire wedding in Innistrad history, a bonding between the Markov and Voldaren bloodlines. Olivia Voldaren is the bride and aims to form a pact with the Markovs to take control over Innistrad. "The bride pledges her heart to the groom and he, his undying affection to her. Blood and famine, violence and peace—In eternal life and through moment's struggle, the two shall rule this land until its people are no more. The Heron's blood makes it so."