The Doctor's Office (2) - S1.E12

Connor and the rest of the Botties go searching for Cubix, or what's left of him only to find that he has been kollected by Dr. K! Thanks to Attractix's returned memory, they fall into Dr. K's lair, literally. Once inside, they have to overcome many obstacles until Connor can get to Cubix...he finds him, but only after K has stolen his Solex crystals. Connor also finds out that Raska is an alien and that Nemo has been held prisoner there! Luckily they fix Cubix and escape the clown tower just as it transforms...into the world's largest robot!