Real Madrid will have to emerge from Group G if they are to retain their Champions League title and make it four in a row.
Los Blancos have been drawn alongside Serie A giants Roma, who reached the semi-finals of last season's competition, Russian side CSKA Moscow and Czech Republic's Viktoria Plzen.
Bereft of Cristiano Ronaldo and Zinedine Zidane - two key components of their three-in-a-row success - the Liga behemoths will have to figure out a new strategy as they seek to make more history.
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Goal keeps you up to date with all the latest developments in the group, such as fixtures, results and standings below.