We begin by a lonely river with the girl and a man slowly undressing and fondling her which turns into a blowjob and some sex. We then meet up with the couple again at a hotspring where they get to know each other better and she pleases him with her tongue. He then repays the favor in the next scene by slapping his dick on her face while she is sleeping, and later on toying with a vibrator.
The fourth scene is the one that is teased on the cover; we're outdoors and she starts undressing, revealing her ropes and he plays with her for a bit. The last scene we're back in some hot springs with her in a swimsuit and they finish the movie nicely with a 1v1 scene.