DURANGO In her emotionally absorbing family drama, Julia Cho crafts a painful version of the Lees, who are what you might call a thoroughly Americanized Korean-American family with many smoldering insecurities and discontentments. The patriarch (Nelson Mashita) is a successful ad executive, though his glacial coldness has unsettled his sons. After he suddenly finds himself booted out of his job, he decides to take his sons, Isaac (Jim Suh) and Jimmy (Ryan Cusino), on a road trip to Durango as a family get-together. Instead, all hell breaks loose, hell being long-standing resentments and a crushing secret involving homosexuality. Cho’s script is both accessible and wonderfully mysterious and surprising. Chay Yew’s masterful direction plays the volatile and subtle emotions of these damaged characters with all the grace and dexterity of Itzhak Perlman on a violin. David Henry Hwang Theater at the UNION CENTER FOR THE ARTS, 120 Judge John Aliso St., Little Tokyo; Wed.-Sat., 8 p.m.; Sun., 2 p.m.; thru Oct. 14. (213) 625-7000. (Lovell Estell III)