The Ancient Magus' Bride - S01

Every few decades, the Wild Hunt-a band of mounted fae knights-awakens and rides across the land. Their passing withers old plants and makes way for new growth. But when lightning strikes the stone monument where the Wild Hunt sleeps, it breaks off a piece holding their guide. Without him, the knights lose their formation when they rise again, wandering the forests and leaving destruction behind. To fix this, Spriggan sends Elias Ainsworth to retrieve the lost guide’s steed. Meanwhile, Gabriel, a sickly boy who dreams of adventure, finds the broken piece of rock and accidentally summons the knight trapped inside. With only one memory left-the need to return-the guide must find his horse and rejoin his comrades before their separation causes lasting harm.