Pack your binoculars and travel up north to Canada for a bird-watching adventure that takes a sudden, mysterious turn. The Thea Sisters are invited by friends to explore the great outdoors, learn about Canadian culture, and even discover a new love for the fast-paced game of hockey. Everything is going wonderfully until a member of their tour group simply vanishes into thin air. Knowing that time is of the essence, the five friends immediately shift into detective mode. Their search leads them straight to the roaring waters of the famous Niagara Falls. With the massive waterfalls crashing around them, they must follow a tricky trail of clues and piece together the timeline of the disappearance. They have to work together and brave the misty environment to find their missing friend and solve the puzzle.