Abstract: A plug-actuated sub can include a housing disposed in the wellbore tubular and a plug seat located inside the housing. The plug-actuated sub also has a flapper and a flapper seat located inside the housing. The flapper seat is axially slidable between a first position and a second position in the housing. The plug seat is configured to release the flapper onto the flapper seat when the plug seat is shifted. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the general subject matter of the technical disclosure.