A new diesel, Salty, arrives on Sodor and hopes to be working by the sea. He is dismayed, however, when he is sent to work at the quarry. He tries to make the best of it by singing to the trucks, making Bill and Ben jealous.

Cranky must stay up all day and night to keep the docks running, which is why he is cranky all the time. A story by Salty makes him cranky enough to knock down a shed. This forces him to be stuck with Salty, Bill and Ben for the night.