First, Cell Jr. uppercuts the opponent and then roundhouse kicks them. Then, he flies past the opponent a few times punching them in the process, which makes the opponent fall. Last, Cell Jr. knees the opponent in the stomach, inflicting a high amount of damage.
Cell Jr. uses most of this attack against Goku in his Full-Power Super Saiyan form. Since Goku is unable to fight back due to his exhaustion from his epic battle against Cell, the Cell Jr. ruthlessly attacks Goku with the Innocence Rush's punches and kick, knocking the Saiyan to the ground. A separate Cell Junior uses the Innocence Rush's knee attack against Krillin after kicking the human off a cliff.