Where to watch Legacies Season 3 Online ? First of all, here are some lines about the summary of this season : As season three begins, Hope has risked everything to pull her friends back from the brink of a monstrous prophecy that threatened them. But when a heartbreaking loss shatters her whole world, Hope Mikaelson will be forced to fight fate itself... Now! Prepare yourself to watch Legacies Season 3 online free. Please help us by sharing Legacies Season 3 with your friends. Thank you for your support! Good viewing.