Captain Pym and Ula, the River Maid, are given us a formal introduction during this event, which occurred some time around Summer 2014 (I didn't note the dates). Pym is the captain of our trusty Sea Trading ship, and Ula we all know, if not by name, because of her Wheel of Wishes we can spin each day for prizes.
Below is a list of all the quests that were given during this event. Click on a name to be taken to the detailed description. As with all Seasonal Events, however, these have all expired, and will likely never be available again.