You and dream were running away from a wither, nobody knows who spawnend it, but it was someone. Dream was running infront of you, looking for a way to run away from the wither since he didn't have anything with him cause he lost all his stuff after dying from a stupid fight with Sapnap because he was drinking water, he was looking behind him to check if you were still following every once in a while too. He had only half a heart left too..