For Mason Matheson, being first-born into a large, prosperous family meant the responsibility to compete to be first in many ways. When Kyle Greene, a childhood friend of Mason and his family, decides its time to broaden his horizons and experiment with men, Mason is determined to be Kyle's "first." Mason began the week shoehorned into a minivan with his four adult brothers and one sister on the way to Kyle's mountain ski lodge for a vacation week...