Welcome back to Mobius! Lead by Boombox the Rat, the Trinyvale Triplettes (and also Sonic i guess) delve deeper into Metal City in search of their missing robotic friend Keychain. Jen outfoxes a fox, Onyx nurtures Nuffin, and Nyack commits the perfect slime as the Merry Metal Mayhem saga comes to its QUILLING conclusion. Happy Hedgehoglidays everybody!