Up, Up and Away!
S15, E8: While Thomas and Percy are delivering a giant balloon, the wind on the coast track whips it up into the sky. Gordon explains that it will not come back, so the engines have to find another way of replacing it.
S15, E8: While Thomas and Percy are delivering a giant balloon, the wind on the coast track whips it up into the sky. Gordon explains that it will not come back, so the engines have to find another way of replacing it.