The tension in Costa Rica heats up as Alexis fights off Heather and Tamara's accusations that she is phony. But when her good friend Gretchen jumps in with her own accusations, Alexis' fighting spirit breaks and with hurt feelings, she departs the trip early. Meanwhile, the remaining women get wild on a white water rafting trip through the jungle that shakes Vicki to the core, resulting in a bizarre emotional breakdown.