the same devotion for the scouts rini and tuxedo mask keeps her from falling under his spell and since wiseman could not put sailor moon under his spell he decides to get rid of her forever but at the last moment prince diamond jumps in the way of his attack and in that action cost diamond his life
As Serena is running away from the Dark Crystal, Molly sees her and says that she thinks that Serena knows what's going with "that thing".
Prince Diamond loses his trust in Wise Man after he killed Diamond's brother.
Serena, Amy, Raye, Lita and Mina transform into the Sailor Scouts, and with their combined powers, they enter the Dark Crystal.
Sailor Moon gets separated from the others, and she meets Prince Diamond again.
Diamond forces Sailor Moon to say a vow to him, and she says Darien's name instead.
Diamond then uses his powers of persuasion on her, but it doesn't work.
Sailor Moon tells Diamond what his brother was trying to say to him before he died.
Then, Wiseman appears then he attacks Serena but Diamond jumped in front of her and saved her. Then Wiseman and Diamond attack each other at the same time, and Wiseman is destroyed temporarily.
After Diamond dies, Wiseman comes back to life, and tries to convice Sailor Moon that Darien is on the Negamoon's side, but again it doesn't work.
Then Tuxedo Mask and the Sailor Scouts come. Wiseman mentions a Dark Gate. Then he disappears.
Tuxedo Mask says that he mght know where the Dark Gate is located, so he leads the Scouts there.
There they encounter Dark Lady who tells them that soon the earth will be destroyed, and nothing that they can do will stop it.