Contains five stories in which Olly the submarine and his friends learn lessons about life, such as the importance of keeping a secret and how to be considerate.

Contains five adventures in which Olly the submarine and his friends learn lessons about life, such as the importance of telling the truth.

The subs help a pod of Baltic Sea grey seals find a new iceberg home… but then they can’t get rid of the grateful seals, who follow them around disrupting their work!

Skid sets out to prove that “anything the subs can do – he can do better.” In the process, he borrows some of their things without asking and ends up causing big problems for the subs and Uma who are trying to build a new Substation.

With Sub D coming, Beth works hard to clean up and breaks her nose light in the process. She’s forced to wear a huge replacement nose instead.

Olly and Beth set out to retrieve a downed satellite but Dirk beats them to it. Meanwhile, because of their love for old sci-fi movies, Skid, Brandt and Bobsie are convinced that the satellite has returned to Earth with more than just scientific information aboard.

Olly’s “sub” conscious tells him that he might not be ready to pass an important obstacle course test.

When a dangerous situation manifests in Safe Harbor, Skid is given an important job. Before long, he’s become much too bossy and must be reined in!

Beth takes inspiration from ancient fish traps to go one better than Olly when something of Dr. Daniels’ needs recovering.

Olly has a hard time believing that a grey rock is actually a powerful underwater volcano – but he soon learns that looks can be deceiving and he must rescue a worried crayfish before it’s injured by the eruption.