Tumacho, the Clubbed Thumb production now playing a return engagement at the Connelly Theater, begins with a chorus of performers onstage. Their faces are lit hauntingly in red as they sing a solemn tale, introducing how “hope has left/from a town bereft” and the need for “lasting peace.” The scene should be a downtrodden one—except it isn’t these human performers that are supposed to be doing the singing. Instead, it’s the saguaro cactus puppets (complete with Muppet-like faces) each singer wields that are narrating this haggard tale. This grizzled silliness comes to define Tumacho, a portrait of the Wild West where characters combat ennui, hopelessness, and impending doom—without ever taking themselves too seriously.