Digimon Frontier (Season 1)

Digimon Frontier (2002) is a Japanese anime series you can watch online on iFILM. It opens with a cryptic text on schoolboy Takuya's phone — a message that sends him to a train station, where the train doesn't head to the next town but straight into the Digital World.

Four other kids board that same train. To save this place from collapse, they have to track down the spirits of ancient warriors — power that turns them into Legendary Warrior Digimon themselves. Trouble is, the enemy already knows they've arrived. Cherubimon wants the Digital World wiped clean of every living thing, and his servants are sent to stop the children before they find what they need.

Among the Digimon shows this one stands apart: instead of summoning monster partners, the kids morph into Digimon themselves. A good pick for anyone raised on Pokémon and on adventure shōnen about friendship and growing up. Stream Digimon Frontier (2002) online on iFILM.