Ep 3. Welcome to Happy Harbor!

The Young Justice squad, consisting of Robin, Aqualad, and Kid Flash, arrive in Happy Harbor, Rhode Island, which will serve as their new base of operations. The trio are welcomed by their new teammate, Superboy, who quickly proves to be a difficult character to work with due to his hot-headed nature and refusal to follow orders. They are also met by the Justice League's Red Tornado, who appoints himself as their supervisor and proceeds to put the team through a rigorous training exercise.

Meanwhile, in Happy Harbor, a group of teenage misfits dubbed "the fog" are causing havoc around town, vandalizing property and causing general trouble. The Young Justice team soon learns that the fog's activities are not as innocent as they first appeared, and it is up to them to establish order in the town once and for all.

As they investigate the fog's activities, the team soon learns that the group are being led by a former member of the Justice League, the villainous Red Torpedo. Red Torpedo is using the fog as a means of obtaining a powerful piece of technology, and the Young Justice team must work together to stop him before he can carry out his nefarious plan.

With the odds stacked against them, the team must learn to overcome their differences and work together in order to defeat Red Torpedo and his minions. Through their struggles, they learn the importance of teamwork and the value of having each other's backs in the face of adversity.

Overall, Welcome to Happy Harbor! provides an action-packed and engaging episode that showcases the dynamic between the members of Young Justice as they navigate their new surroundings and take on their first mission as a team. Viewers can look forward to exciting fight scenes, intense drama, and a few surprises along the way.