A Mysterious Rock (Chinese: 怪石现世 Guai Shi Xianshi) is the 1st episode of the season Ultimate Battle: The Next Generation.
Slowy researches on the mysterious stones that dropped on the Green Green Grassland and the robot found in the last time; meanwhile, an fireworks celebration held, and Weslie and Wolffy fought an mysterious figure on Slowy's lab and followed him through an portal.
- Big Humphrey
- Shu Yi (cameo)
- Shu Er (cameo)
- Qiu Shenglang (cameo)
- One of the oldest tracks of the background music of Pleasant Goat and Big Big Wolf "530" plays while Weslie and friends were digging up to save their memories in a treasure.