After agreeing to help London remove shoes from her submarine, Zack, London, Maya, and Woody are all trapped in London's shoe submarine with only enough air for thirty minutes. Meanwhile, Marcus helps Cody prepare to play chess against Sasha Matryoshka, whom Marcus thinks the name must mean he is from Russia. They are partly right; Sasha is Russian, but he turns out to be a she, and skilled at chess. As Cody put it, he played girls in chess before, but this is the first one who did not wear orthodontic headgear!
- Debby Ryan as Bailey Pickett
- Matthew Timmons as Woody Fink
- Erin Cardillo as Emma Tutweiller
- Zoey Deutch as Maya
- Cody Kennedy as Mischa
- Although listed in the credits as Mischa, the character was called "Sasha Matryoshka" during the episode.