Watch Online Free on Watchseries. Four generations of the "People Who Live Where the Cedar Trees Start to Grow" (Wah-up-weh-tuhneum), also known as the Mono or Western Monache people, and their attempts to maintain cultural traditions such as acorn collecting, food preparation, music, dance, powwows, and games. Colliding Worlds won Best Documentary Short at the American Indian Film Festival in 1980.