A bunch of people are meeting in a raft shop.  They all meet in a room to put on helmets and get together their equipment.  They all go for a long walk together, including down a large flight of stairs.  They reach a long line of rafts by the water, where they get in and begin rafting.  The people are white water rafting down a turbulent river, using their paddles in unison, going down small waterfalls together.  They all stop to have lunch under an outdoor pavilion at the end of their adventure.