Click and drag the ring at the end of the rope to extend it. Your goal is to extend the rope so that it touches every orange circular node. Once you've touched all the nodes, you have to wait a few seconds for the game to make sure you've connected them properly.

Make sure the rope doesn't pass through the blue danger zones, or it won't count! Some nodes appear along a blue track. You can move these nodes with your rope to put them in a new position.