Shu's big gamble comes to fruition as he returns with vital information. But before the crew can challenge God, Kai has a score to settle with Arrow.

The crew leaves Lingalind behind and heads towards Epitaph Mountain. However, their way is thwarted by new and old threats which endanger the whole world.

Arrow and friends face their strongest opponent yet in God's realm. Once the Guardian reveals the ultimate truth of their world, a peaceful resolution seems unlikely.