Complex sentence: So, the siblings are off to Thule, always hunted down by evil Paapis, who confronts them again, spits in their faces, submiting them through some magical spell into a death-like sleep, from which they can only arise, after every sunset.
Split into simpler sentences: So, the siblings are off to Thule, always hunted down by evil Paapis, who confronts them again. Engaging some magical spell, he spits at their faces, thus submiting them into a death-like sleep, from which they can only arise, after every sunset.