Legion of Super-Heroes: Millennium (2019) #2

Plot

Get on board for a journey through the future like no other! A gallery of all-star artists join our mysterious guide as they continue their 1,000-year journey toward the 31st century, inspiring Booster Gold to time-travel, debating fighting tactics with O.M.A.C. and making their way to the front door of the Legion of Super-Heroes. The DC event of the future is here now!