Another "Arrow" and "The Flash" crossover episode is coming, and it seems that it's going to cause more trouble for Olicity.

Spoilers from TV Line teased that the episodes, titled "Legends of Today" and "Legends of Yesterday," are set to air on December 1 and 2 and will further explore Oliver's son. In the comics, it is known that Oliver has a son named Connor Hawke, but he is yet to make an appearance on the show. However, he is very much in the current show's universe, because if you remember last season, Oliver saw his ex in Central City, and in the middle of their very brief conversation, she got a phone call from her son (who is, of course, Oliver's son).

Executive producer, Greg Berlanti, teased that this year's crossover features a moment similar to Oliver's meeting with his ex.

There is little that we know about the current Connor Hawke in the show. However, it has been noted that in the comics, he will eventually replace Oliver as the Green Arrow. In CW's DC Universe, however, Franchise Herald noted that Connor Hawke may have a different storyline altogether, as he is said to appear in "Legends of Tomorrow," but may not be Oliver's son from the future (from another earth, maybe?).

But, let's not think about that because Oliver's son's appearance is not the only thing to look forward to in the next episodes. The crossovers, according to TV Over Mind, will show Team Arrow and Team Flash reuniting to battle an immortal enemy in the form of Vandal Savage.

The teams will also meet new friends, with Hawkgirl and Hawkman fighting alongside them in battle. The outlet mentioned that Hawkman will be making his debut in "Legends of Today," before being one of the main characters in the new series, "Legends of Tomorrow," which is set to air in January.

There are a lot of reunions and revelations, and it seems that Malcolm knows who Vandal Savage is! According to Arrow's official synopsis, "Malcolm arranges a meeting between Vandal, Green Arrow and The Flash that doesn't go as planned."

The "Arrow" and "The Flash" crossover episodes will begin with "Legends of Today," which will air on Tuesday, December 1, at 8PM, and will continue with "Legends of Yesterday," on Wednesday, December 2, at 8PM on the CW.

Check out the teaser for both episodes below. Are you excited to see Team Arrow and Team Flash together again?