Dragon Ball Super (2015)

S1E76 Conquer the Terrifying Foes! Krillin's Fighting Spirit Rebounds!

In a mystical forest, Goku and Krillin find themselves battling their former foes, including Frieza and Cell, all within a series of haunting nightmares. Master Roshi had sent them on a quest to retrieve a unique herb, but the challenges they face in this dreamlike realm make their task far more perilous than they anticipated.