Voltron

Three animated characters are in a boat navigating a glowing green cave; a young character with glasses smiles while holding a paddle, a tall translucent figure stands at the back, and a man in dark clothing sits at the front, all moving forward through the water. The scene cuts to a different setting where a young man with dark hair is strapped into a high-tech seat, his face contorted in pain as he is jolted backward by a sudden force, while another character in a green and yellow outfit watches with a strained expression.