In serial fiction, the term "reboot" signifies a new start to an established fictional universe, work, or series. A reboot discards continuity to re-create its characters, plotlines and backstory from the beginning. It has been described as a way to "rebrand" or "restart an entertainment universe that has already been established".
Another definition of a reboot is a remake which is part of an established film series or other media franchise. The term has been criticised for being a vague and "confusing" "buzzword", and a neologism for remake, a concept which has been losing popularity since the 2010s. William Proctor proposes that there is a distinction between reboots, remakes and retcons.