Once Upon a Time (2011)

S5E10 Broken Heart

During a flashback to Camelot, Hook succumbs to becoming a Dark One, fueling his desire for vengeance against Rumplestiltskin once more. Tensions rise between Emma and Hook as they clash over their next steps, leading to the revelation of crucial truths from Camelot that intertwine with the present. This culminates in a dramatic showdown between light and dark, steering the heroes toward their fated paths. Meanwhile, in Storybrooke, Hook's centuries-old thirst for revenge against Gold endangers their futures. Emma faces a critical challenge, urging Hook to resist the darkness, while she, Mary Margaret, David, and Regina prepare for a new mission as an unforeseen evil is unleashed.