Once Upon a Time is a fantasy TV series that showcases Tom Ellis in a guest role. The show takes place in the fictional town of Storybrooke, where fairy tale characters are trapped in the modern world with no memory of their true identities. Tom Ellis appears in a few episodes as Robin Hood, the legendary outlaw known for his archery skills. Once Upon a Time weaves together various fairy tale narratives, creating a captivating and magical world that appeals to both children and adults.