Clifford, T-Bone and Cleo are playing "shuffle-dog." They have a shuttlecock. Cleo scores in the proper area for ten points. The Clifford tries, but he sends it in the water. It bounces ten times, which means that Clifford also scores ten points. Then T-Bone takes a turn, but it takes him forever to shoot.
This gives time for Mac to come and bump into T-Bone. They tell him what they're doing. Mac tells them about his "secret dog club." He wants to show it to them, but he notes that "not everyone can get in, you know." It's a bit of a climb to Mac's secret spot, and T-Bone has some trouble. He has to have Clifford help to get him all the way up.
Everybody thinks Mac's secret spot, which features an awesome waterfall is great. T-Bone really likes it, but then he's surprised when Mac tells him he isn't in the club. Why? According to Mac, the first rule of the club is that in order to be a member, you have to be able to get to it without help. Cleo, Clifford and T-Bone don't like this at all. They decide to have a vote to try and get T-Bone in.
Mac votes that he can't be in. Clifford, Cleo and T-Bone all vote yes. They've won, right? Wrong. Mac says that as the president, he has four votes. He wins. Or does he? Clifford and Cleo agree that if T-Bone can't join the club, they don't want to be in it either. They leave.
Mac shouts after Clifford, offering him Vice President status, but it didn't work. So Clifford, T-Bone and Cleo go back to their playing, this time Super T-Bone. Mac comes down and tries to tempt Cleo to join with tummy-yummies, but that doesn't work either. Mac leaves. He's got an exciting meeting to go to.
Over at his secret location, he tries to conduct a meeting, with all the regular trappings of such meetings, such as "old business" and "new business." It doesn't work very well with just him though. He goes back to the others, who are still playing Super T-Bone, with a new trick up his sleeves. He says his club has games and he's offering prizes.
Clifford says that it sounds great, but can T-Bone join? No, he's still out. Mac tries begging. It's no fun being in a club by himself. Clifford retorts that it's no fun being left out of a club by yourself either. Mac finally gives up. He makes an announcement and changes his vote. T-Bone's in. With everybody in, they head back to the secret spot, where they have a great time, sliding down the waterfall and having splash fights.