Adolescent idiopathic scoliosis (AIS) is a three-dimensional deformity of the spine in skeletally immature children aged =10 years at the time of diagnosis. The deformity should be corrected in the frontal, sagittal, and axial planes. The video shows the surgical correction of a double major scoliosis deformity in a 14-year-old girl with normal kyphosis and type C lumbar modifier. Double major curve involves a major thoracic structural curve and a minor thoracolumbar or lumbar structural curve. The axial rotation of the vertebrae and ribs induces the rib hump deformity in the thoracic region and thoracolumbar passage. Simultaneous rod application and derotation can improve the correction in the frontal and sagittal planes. In addition, applying two rods with different bending contours for less kyphosis on the convex side and over-bending at the level of apical vertebrae on the concave side can improve the correction in the axial plane at the time of rod reduction. Direct vertebral rotation is performed by applying several rotation tubes; this distributes the force across different pedicle screws and reduces the risk of pedicle screw pullout at the time of rotation. The simultaneous dual-rod application and direct vertebral rotation technique to correct double major AIS curve provides excellent correction in all three planes with no major complications.