The story starts with plannings and decorations going on for Anna's birthday. elsa has arranged everything , but when it comes to present the gifts before Anna , she discovers she has caught a cold. even her temperature has risen and her sneezes forms mini snowmans! later anna finds elsa is in a crucial condition and takes are to the trolls . They say that act of true tình yêu has evaporated part of her powers . She might lose her life as she is built on the powers , but can be saved if she finds someone who has powers like her. anna asks who can that person be . the trolls says that he is a guardian...
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