Four

In the first panel, Calvin stands amongst some oak trees, holding a snowball with both hands. He sighs before saying I hope the purpose of my life elegantly reveals itself one day.

In the second panel a snowball slams into the side of his head. We cannot see who's thrown it.

The third panel shows Calvin lying face-down, concussed on the floor of the forest.

In the forth panel, night has fallen. Calvin has not moved.