With a mandate from their wives to build something for the kids, brothers Andrew and Kevin tackle the Ultimate Playground. The boys unleash their inner eight-year-olds to create a kid-friendly cottage play area, not fully realizing they’re actually making one for themselves. The boys hurl themselves headlong into slack lines, zip lines, teeter-totters and a man-sized version of a baby bouncer, proving the old adage that while growing old is mandatory, growing up is optional.