Daine was a Captain of the Queen's Guard, leading a squad consisting of Jode d'Jorasco, Lei d'Cannith, Pierce and Terfel Glas.
Daine was born into House Deneith, and served in the Defender's Guild growing up. He grew up in Cyre, and always felt a strong connection to his country. Eventually, this lead to Daine having to choose between the House and his country, and he chose Cyre. He left House Deneith, and gave up his heritage because of this.
Daine's squad was fighting at the Fields of Ruin on the Day of Mourning. They all survived, and tried to find survivors in the ruins of Metrol. They found none, and eventually found their way to the refugee camp that would become New Cyre. Daine left along with Lei d'Cannith, Jode d'Jorasco and Pierce to take Lei to Sharn, where her betrothed was supposed to be waiting for her.
Unfortunately, things didn't go to plan. The group dragged their feet, Lei didn't really want to go and get married to a man she hadn't met. When she arrived in Sharn, she was shunned by the members of her house. She had been made excoriate, on orders of Merrix d'Cannith himself, the patriarch of Cannith South. Even worse(?), her betrothed had been brutally murdered a week ago.
Daine, along with Jode d'Jorasco, Lei d'Cannith and Pierce ended up in High Walls, the refugee camp in Sharn. Jode put them in contact with a figure from Daine's past, Alina Lorridan Lyrris, a Zil noblewoman. Alina, taking pity on the group, gave them "honest" work. She thought one of her employees, a man named Rasial Tann, had stolen some Khyber shards that he was supposed to deliver and gone AWOL.
They met with Teral ir'Soras, and dined with him in his tent. Also present were Greykell ir'Ryc, Monan Desal and Hugal Desal.
Several days later, they were attacked by some of the refugees, who had strange mutations. The attackers were led by Monan, who put himself and Daine into a coma when he was defeated. They got Daine to a House of Healing, but it wasn't until a Kalashtar named Lakashtai saw to him that he awoke. Lei stayed with him until he awoke, and while she did so, Jode went to investigate a lead, alone.
They found Jode dead in the sewers, alongside Rasial, 3 days later. Daine blames himself, Jode should never have been allowed to go alone.