Mom is always reminding Bluey and Bingo of the things they need to do, but they are all boring things. Bluey and Bingo think that if things were important, then they wouldn't be boring. When they head to the pool with Dad and they all three disregard Mom's reminders, they learn that the boring things actually make things fun.
I gave this two stars because when the kids complain and say that Mom is a "fuss spot" and always has them do boring things, Dad agrees with them and says, "She does." Then Dad and the kids proceed to ignore mom's reminders. This is probably true of many dads, but personally I didn't like how Dad verbally affirmed the kids' conclusions about Mom. But I guess the point is that Dad and the pups all have a lesson to learn, so storywise it works.