This and a few more conventional pleasures make the first half of “Devara: Part 1” a pleasant enough sit. The plot moseys more than it charges forward, and the movie only arrives at a dramatic precipice before its pre-intermission break. At this point, the drama stops being about Devara and Bhaira’s rivalry and starts concerning Vara, now an adult and the uneasy bearer of his father’s legacy. This back half of the movie occasionally capitalizes on its initial promise, especially whenever the relatively timid Vara tries to fill his dad’s mega-sized shoes.