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 love 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 of dreams of million children, jack frost . he might be able to save whom they can search in north pole. anna didnot waste any time to save her dear elder sister. she arranged a ship and started sailing towards north , leaving kristoff behind to look after the mini snowman it seems their luck is bad . First a fire spills in the the ship which elsa blows off somehow in her critical conditiob and next a storm comes and the ship's riggs gets torned and changes its direction . Elsa manages to correct the direction , Anna says her to take no more pressures . the next day the ship got struck with ice berg and was about to sink and elsa thought to turn the sea to complete ice as much she can . anna gets fed uped by what was befalling them and elsa had got more sick. elsa turns part of sea to ice and gets on the ice field . as they were crossing the ice behind was breaking apart . If they did not go fast then the ice below would break apart and they could drown in the sea . anna aks elsa to hurry up, but elsa was totally exhausted and her power was not letting her to do anything. . anna manages to get her past , but herself gets stuck in ice . elsa manages to save her and reached the building of guardians. anna bursts in and cries for help and sees only surprised santa claus who was the leader of the guardians! she asks her where is jack frost and tells him everything . he quickly pressed on the alert system. the guardians comes - sandy , tooth-fairy and Easter bunny except jack. Santa gets angry cause they need him and is not quick though he is fastest of all. bunny says he would be playing around ,so he could get him. Meanwhile jack comes with his stick and asks whats up this time. Santa firsts shouts at him pointing at the critical condition of a princess/ anna says him to come down and act first . jack holds elsa and anna says to bring back her powers. jack says his power is his stick and touches it to elsa head ,but nothing happens. anna says whats his true source of magic? jack thinks a lot and figures out nothing . Then she says where did he get the stick? he says yes that must be the origin of his magic where he found the stick. he took elsa there where he had found the stick and elsa regained her powers and memories too. elsa brings jack to anedrelle and introduced him to all . There is funny occurence with minisnowmans and elsa is happy to have her sister like anna and cool powers . she 's true snow queen.