It's almost the end of Winter Break, and Marie is on a reluctant hike through the woods with her brother when they discover a mysterious portal and find themselves in another dimension. Marie is contacted by the Mage Goddess, who gives her the magical Ocean Bracelet, an item that allows her to transform into the superhero Soulstream. With her newfound powers, and the help of her friends, she embarks on a quest to save the Shattered World.