According to the story, Callie and Marie were happy together nothing bad happen, then Marie had to visit her parents and Callie was having a meeting so she couldn't go with Marie that day, The next day Callie was suppose to arrive where Marie was, but she didn't so Marie started worrying about Callie, so she went everywhere to find Callie, but she didn't find her, she went to Octo Valley just to find out that the snow globe holding DJ Octavio was shattered, so she went to the game-location (you know were you spawn in the game which I don't yet) to find the best Inkling to help her find Callie.

Spoiler: Cap'n Cuttlefish is dead (R.I.P)