I haven't gotten any info on that yet, and I'd really like to know what it is. Is it something like... Sending your pet out to gather materials or something? If so, how do you unlock it? Is this a part of the site that is still being worked on?

missions are a way for your pet to earn experience and gold. It also awards you with mission satchels which could have items, coins, or pet essences in them.

You unlock missions by going to the plaza in a town and scrolling down to where it says increase mission limit.

You can head over to the town barracks to accept missions.

Pay attention to the minimum required level. That refers to the level of the pet you are sending on that mission. Also, when you click on the mission, a info page pops up. In the top left,
it says Emphasized statistic:
Then it will say intelligence, dexterity, health, ect.

You should send a pet with a sufficient level who has a lot of points in the emphasized trait on the mission.

Missions are free to do and a good way to earn money but can be failed.

Oh, okay. Thank you so much~ I would have never figured that out on my own