The Smiling Critters from Poppy Playtime 3—CatNap, DogDay, Bobby BearHug, Bubba Bubbaphant, CraftyCorn, Hoppy Hopscotch, and Kickin Chicken—are trapped in an underwater prison run by the terrifying Barry.exe! The prison is completely flooded, creating dangerous water-themed challenges that test their agility and problem-solving skills as they race to escape.

As they navigate the submerged hallways, they must avoid traps, solve puzzles, and outsmart Barry.exe, who lurks around every corner. Will they manage to escape the flooded prison or be trapped beneath the waves forever? It's a thrilling underwater adventure full of suspense!