Children's animation centred around the adventures of Ernie, controller of the International Underground railway, and his friends.
Episode List
S1 • E1
Pop Decoy
Jubilee lets slip his secret about pop superstar Sam 7. Bakerloo gets into pop.
S1 • E13
Summer Breeze
Hammersmith and City have a bet with Circle about who will take the most passengers, but Hammersmith and City have to put their bet on hold to help Ernie cool down the underground.
