John Mulaney returns to his Chicago high school with David Letterman as they candidly discuss addiction, fatherhood and the state of stand-up comedy.
该节目为《强心脏》续作，将会搜集时下韩国关注的热门明星话题，或是人们好奇的话题，欲展现比《强心脏》更强势的故事，同样会让观众参与投票选择谁是当集「强心脏」。不同的是，《强心脏联盟》将会分成2队，各队挑战者们会透过「缩图」（预览图）说故事展开对决！
