Dr. Holly Fearnbach discusses with Gracie Ermi how technology can be used to help Orcas. They explore how computer science can be used for purposes beyond what it is known for.

The Doctor realizes the reason why his future self gave River Song his sonic screwdriver. He uses it to save her and the people trapped in the library.

Jackie, Matt, and Inez brainstorm how to build a ramp to get up the steep cliff to the island. They create a design for the ramp such that it can be easily transported and will serve the purpose of getting them to the island.

To escape the island, the CyberSquad must reach before sunset one of the portals that Motherboard has placed on the island at random. The group uses the map to determine the distance to each portal and accounts for facts such as steep climbs and bridges being down. The kids and Digit decide to take the rapids to the bay, where they successfully reach the portal.

Ed presents his advertisement for Great Bridge Insurance to win him over as a client.