The clash at Darga's palace took place in 19 BBY inside the confines of Darga the Hutt's palace.
A squad from the Alderaanian Resistance had arrived at the palace to look into Darga Jiramma Mionne's involvement with the Sarlacc Project and were being hosted as visitors. The conflict began when they found the Jedi named Denia held captive there, prompting Darga's forces to betray them.
Amidst the ensuing pandemonium, Darga abandoned his palace, departing for Bespin, while the Alderaanian team, along with Denia, managed to make their escape.