Mariah plans her upcoming nuptials to billionaire James Packer and the launch of her first world tour in a decade simultaneously, which presents a difficult dilemma. Meanwhile, Mariah must race the clock to showtime and entrust the tour at the hands of her new tough manager, Stella.
A grueling tour schedule presents obstacles for Mariah, who does her best to establish a comfortable home base in London for the twins. Meanwhile, two of Mariah's closest friends pull her into the middle of a heated disagreement.
A time zone change causes Mariah to be an hour late for a concert in Luxembourg, which also causes some unhappiness among her fans. Meanwhile, Stella is forced to bring the fiery hairstylist Danielle back into the fold; and has to protect Mariah's reputation after former employees leak information to the press.
Mariah makes special memories for her kids; Molly continues to please her tough boss, Stella; Tanaka lights a match.
Mariah spends more quality time with her road family; Tanaka struggles to keep his feelings platonic; Tanaka's moment becomes jeopardized when he suffers from an unexpected injury.
Mariah mourns the loss of her good friend Prince. In other developments, two injured dancers cause Mariah to consider simplifying the show, but Anthony is against the idea. Later, a heartbroken Tanaka realizes his relationship with Mariah was a fantasy.
As the European leg of the world tour concludes, emotions peak, and Mariah is relieved to find out her backup singer and best friend MaryAnne finally has forgiven Anthony, her co-creative director.
It's bittersweet for Mariah to have to say goodbye to her road family as the Sweet Sweet Fantasy Tour comes to an end in South Africa in the Season 1 finale. Meanwhile, Tanaka is on top of the world when Mariah promotes him to codirector.
