As Mina, along with Himeko, Fu Hua, and Kiana were Dealing with the Honkai Corrupted sharks, above their Location Sin Mal was waiting for her accomplice to arrive at the location where they were supposed to meet.

Sin: DAMN IT ALL! WE AGREED TO MEET HERE, BUT THAT ASS HASN'T ARRIVED YET! HOW LONG DOES HE EXPECTS ME TO WAIT!

Sin Complained as she kicked the Boat several time in Anger.

Sin: IT'S BEEN TWO DAMN MINUTES AND HE HASN'T ARRIVED YET! I HOPE YOU DIE SOON YOU USELESS OLD FART!

Then suddenly a Light shows over the Horizon, and as it gets closer it shows a Schicksal Littoral Combat Vessel, Sin turn's her Attention to it and made a malicious smirk.

Sin: Ahh, I see how it is.

With the Littoral Combat ship.

Crew member #1: According to Himeko, she and her team have dove underwater to look for Jiuling. We'd better hurry up and provide support.

Then a Crew member looks through her Binoculars and notices the boat that sin was sitting.

Crew member #2: Wait there's an odd ship over there. That Crest... That's... AN ANTI-ENTROPY SHIP!

Sin jumped onto the Head of the boat and shot into the air intending to kill the Schicksal Crew Members who Raised their guns and started shooting at Sin.

Crew member #1: FIRE AT WILL! DON'T LET HER GET ANYWHERE NEAR US!

As they shot at Sin, she manged to cut all of their bullets leaving the Crew members stunned.

Crew member #1: She... SHE CUT UP OUR BULLETS!

Sin: GO TO HELL! DEATH TO SCHICKSAL!

then everything fades into black, then we see the starlit sky with the moon hanging overhead. And we hear Sin singing.

Sin: Go to sleep, my baby... Go to sleep... 

The Deck was covered in blood, and we see Sin in the middle of the slaughter.

Sin: You'll be flying in your dream... Feel the stillness of the waters...

Then Sin looks at her blood covered hand.

Sin: Go to sleep... Go to sleep... Go to sleep...!

The enemy has made itself known: Anti-Entropy. And beneath the waves there are many Honkai Beast Kiana and her friends are in Deep trouble, and there's Danger all around!
And will the Team discover to secret of the knight they found on the Scroll?