We saw in 3B-19 how Magnus suffered as a result of Alec leaving, but we did not get to see how the breakup impacted Alec. This is my take on that. Disclaimer: As always, the Mortal Instrument characters belong to Cassandra Clare, and I claim no ownership over the parts of this story belonging to the Shadowhunters TV producers and writers. The rest of it is all of my own creation.

Alec has to make an impossible choice between his parabatai and his love. Which will win out? Who is more important? Jace whump, Malec, Clace.

In the midst of a battle, Alec and Magnus accidentally fall through a portal and end up in limbo. While the others scramble for a way to find them and bring them home, shadowhunter and warlock have to fight to stay alive and whole in a realm that claims lost souls for eternity.

"He was going to get himself killed. Whether it was by Zelena, another enemy of his or even some of his former allies whom he had royally pissed off, Robin Hood had a death wish. One which the Evil Queen was one step away from fulfilling." The story of Robin and Regina through their highs and lows of the missing year.