The Unexpected Delight of “Sasquatch Sunset”

The brothers have long had mythic simians in view: in 2011, their short film “Sasquatch Birth Journal 2,” a clever four-minute goof depicting a female of the species giving birth unassisted, played at Sundance. Their work until now has depended on keeping straight faces while telling tall tales, but in “Sasquatch Sunset” they approach a still taller tale with a seriousness that drives out parody, and the movie thrums with palpable pleasure arising from their own sense of wonder and curiosity. They’ve previously bent reality to fit their fantasies; now, in trimming fantasy to resemble reality, they display a deepened artistic purpose.