An orphan, Mari McCabe, is bailed out of a Detroit jail by her foster parent Chuck. Three days later, Arrow and Flash are chasing her through the city.
Mari turns to a college professor for help learning the origins of the Tantu Totem... unaware that he's working for the woman who plans to take the Totem from her.
When Cisco detects metahuman activity in Detroit, Flash goes to investigate... and takes a friend with him.
After a high-speed chase to escape Flash and Arrow, Mari returns to the university to ask Professor Macalester for help... only for him to betray her.
After capturing Mari, Kuasa takes the girl to the African village of their birth and reveals that they are sisters... and that the Totem belongs to her.
Kuasa takes the power of the Totem for herself... but Mari receives help from the spirit world to fight her sister in final battle.