The Harper quadruplets are about to be put to the test.

In this Saturday's episode of Nickelodeon's "Nicky, Ricky, Dicky & Dawn," called "The Quad Test," the four 10-year-old siblings suffer an embarrassing incident at school, and are challenged by their parents to give up their personal security items — and whichever one of the quads actually lives up to the challenge wins a month of no chores. In the end, only two remain in contention, leaving them to enlist the aid of pro soccer player Alex Morgan, the brilliant Science Bob, and some curiously placed straws.

Get a preview of the episode in these exclusive photos:

Ricky and Dawn meet American soccer star Alex Morgan.

Dawn and Alex, with no Ricky in sight.

The Harper kids love themselves some Science Bob.

And then this happened.

"Nicky, Ricky, Dicky & Dawn" airs on Saturdays on Nickelodeon.