The rebels are forced to sneak around a deserted town while Mint mourns her destroyed birthday plans. Batra is near, and is easily tricked into retreat by a gadget of Yellow's.
Stick and the others use the break in the Inbit threat to throw a birthday party for Mint. Mint gets everything she ever wanted: a cake, a big jar of peppermints, a new dress, a fireworks and airplane show, and most of all, she has a family. And although she would never admit it, that is exactly what she wanted.
This celebration is hardly just a gift for Mint. It was also a welcome bonding opportunity for the group.