After Nephis reached the Dark City and the huntress was introduced, both Sunny and Effie watched the rest of the movie with bleak expressions.
The second act took place in the outer settlement, and was dedicated to Neph's heroic attempts to protect and inspire the young men and women trapped there. There were a lot of impassioned speeches, blood-chilling expeditions into the Dark City, and tense altercations with Gunlaug's forces.
There were also a lot of shenanigans from young Sunny, to the delight of the audience. At some point, people started to scream "Are you crazy?!" along with him. And a bit later, there was a sort of comical moment of growth for the character, when he asked "...Am I crazy?" instead and went along with Nephis without offering his usual critique, which was met with cheers.