Fjord's in heat and the smell of him is driving Caduceus insane. Things escalate as Fjord becomes increasingly desperate for cock, before reaching a peak. Caduceus' control isn't infinite and he forgets to warn Fjord about a very unique part of firbolg anatomy until it's rather too late.

+Trans Fjord
+Fjord being extremely desperate and needy
+Caduceus losing control and fucking him HARD
+Knots. Big knots.
+Aftercare and cuddling while locked together.
+Cum, and a lot of it.

-Non-con. Both are very much into it even though they both sort of lose control