Watch Arnie & Barney Full Movie Free Online 123Movies. A platoon of ants set out to save their community in the midst of a severe drought, but the hilariously inept Arnie and Barney – who are not cut out for heroics – decide to tackle the problem themselves. Their bumbling efforts lead them to uncover a shady water racket and team up with a secretive superhero mosquito. In a series of comical mishaps, they inadvertently save the meadow and become the most unlikely heroes of all.