The six Canadian superheroes each have distinct abilities that contribute to their team efforts, including Breakaway, Niagara Falls, Sasquatchewan, Chinook, Poutine, and RCM-PC. For example, Breakaway is voiced by Will Arnett and is a key team member, while Sasquatchewan, voiced by Brian Drummond, has a storyline involving searching for his long-lost parents to prove his Canadian citizenship. The show highlights their underdog status and quirky powers as they face threats like evil giant robots and an unemployed octopus.

The team confronts a variety of antagonists including evil giant robots, a malevolent alien who eliminates Earth's mightiest heroes, a crazed hockey coach who builds killer clone armies, an unemployed octopus, needy hardware store clerks, and an aggressive extraterrestrial wedding planner aiming to use Earth as a wedding venue.

The six Canadian superheroes face challenges such as battling evil giant robots, an unemployed octopus, and needy hardware store clerks. They are also stereotypically underdog super-unknowns called in as Earth's last resort after all other superheroes have been destroyed, which adds pressure and complexity to their missions.

The main characters include six little-known Canadian superheroes such as Breakaway (voiced by Will Arnett), Niagara Falls (Cobie Smulders), Poutine (Charles Demers), Sasquatchewan (Brian Drummond), Chinook (Ceara Morgana), and RCM-PC (Veena Sood). Each has unique abilities and personalities that contribute to the team’s dynamic, with Breakaway being a prominent figure and Sasquatchewan searching for his long-lost parents to prove his Canadian citizenship.

Season 1 features a variety of antagonists including evil giant robots, a malevolent alien who eliminates Earth's mightiest heroes, a crazed hockey coach who builds killer clone armies, an unemployed octopus, an aggressive extraterrestrial wedding planner, and a needy hardware store clerk. These villains create diverse threats that the team must overcome.

The show uses Canadian cultural elements and stereotypes humorously, portraying the superheroes as underdog 'super-unknowns' with maple-syrup-powered hope. It includes references to hockey, Canadian citizenship, and features characters with Canadian-themed names like Sasquatchewan and Poutine. The tone is comedic, highlighting Canadian quirks while saving the world.

Notable episodes include the pilot where global leaders recruit the lesser-known Canadian superheroes after a malevolent alien eliminates Earth's mightiest heroes; an episode where a crazed hockey coach builds killer clone armies to wreck the NHL; another where the team attends a convention that turns out to be a trap to kill Bryan Adams; and one where an extraterrestrial wedding planner tries to seize control of Earth for a wedding venue. There is also an episode involving the Pooch Pack attacking Parliament and Sasquatchewan searching for his parents.