The protagonist/you are an Octonaut. Everything was doing well until things weren't the same anymore. Something had changed. The protagonist/you are on a infectious discovery trying to figure out what is going on. (It's an AU from my childhood ACK ACK)

When Shellington offers to teach Dashi a little more about his specialist subject - science, Dashi is excited at the prospect of learning some of the many sea creature facts that the marine biologist knows and loves. But can she become as expert on ocean knowledge as her boyfriend is - and learn how to be a real scientist when a mission goes wrong and Shellington's not there to help out...? The second sequel to 'Driving Lessons'! [Contains Dashton]

After Tweak and Kwazii have a little dispute about who does the most challenging role in the crew, Captain Barnacles decides it would be good for everyone to try out something a little different for a few days, and switches everyone's Octonaut jobs around. But can they still manage to save the day when the whole crew is called into action on multiple missions - and in each other's roles?