Watch Legion of Super-Heroes (2023) HD Full Movie Free on SolarMovie. Watch Legion of Super-Heroes (2023) online free. Kara, devastated by the loss of Krypton, struggles to adjust to her new life on Earth. Superman ment...Kara, devastated by the loss of Krypton, struggles to adjust to her new life on Earth. Superman mentors her. Meanwhile, she must contend with a mysterious group called the Dark Circle who searches for a powerful weapon held in the Academy's vault.