Madi Collins has invited her BFFS Lulu Chu and Jessie Saint to celebrate the Fourth of July. They decorate the house and then beg Madi's stepbrother, Codey Steele, to drive them to the amusement park. There's a new ride that they want to go on. Codey claims none of the girls are tall enough to ride, and he won't take them unless they measure themselves first. He gets a measuring tape and then claims that the girls need to take their shirts off so they appear taller. Even with the shirt trick, none of the girls quite meets the height cutoff. Codey then offers to act as their guardian so they can all ride, but on one condition: Madi needs to suck his dick while her friends watch.

Madi agrees to Codey's conditions, so she holds up her end of the bargain by getting on her knees and going wild with her stepbrother's cock. At first, Lulu and Jessie watch as Codey insisted. Eventually, though, they can't hold back from that fine looking fuck stick. They come crawling closer until eventually Codey is enjoying a three-girl BJ from his stepsis and her pint sized friends. The trio relocates to the bedroom, where Codey lies down and lets the girls continue sucking him off.

Exchanging kisses, the girls decide that Madi should be the first to hop up on the D and take a stiffie ride. Lulu takes Codey's cock next, as she leans forward and laps at Jessie's twat. Once Madi has made sure that her friends are enjoying themselves, she climbs on top of Jessie's face to ride her friend's mouth. Eventually, Lulu leaves the middle so that Jessie can scoot forward and enjoy Codey's dick buried in her snatch. Lulu takes her turn sitting on Jessie's face while Madi laps away at Lulu's titties. When Codey is getting close to cumming, Madi gets on her back and lets him reach the end of his endurance in her velvet glove. He pulls out at the last moment, nuttting on Madi's belly to create a mess that Jessie and Lulu lap up. As the girls are exchanging satisfied kisses, Codey lets them in on a secret: The rule are the rules and nothing he can do can get them on the ride.