Secret Men's Business explores the relationships and issues of 4 school-friends reunited after the death of a beloved school teacher. During a weekend of sun, surf, girls, wives and late night reminiscing, the friends begin to deal with certain truths which have been ignored for some time. As relationships and issues are explored, the friends face their own personal challenges amidst a contempt bourne out of familiarity.
The whole gang are back and as close as ever. They decide to get even closer by spending the summer together at a beach house. They decide to hold the biggest party ever to be seen, even if the preparation doesn't always go to plan. Especially when Stifler, Finch and Jim become more close to each other than they ever want to be and when Jim mistakes super glue for lubricant...
Despite a traumatic event, a group of friends decide to go ahead with their annual beach vacation. Their relationships, convictions, sense of guilt and friendship are sorely tested. They are finally forced to own up to the little white lies they've been telling each other.