The trailer starts with Kratos and Atreus having their usual quarrel. Atreus is evidently older and seems to have some new tricks up his sleeves - what exactly is that blue creature he is riding? At the finale of the 2018 title, the pair and players were faced with the same questions. What part do they play in the foretold Ragnarok? That is the series of events that ultimately lead to the end of the world according to Norse mythology.