You attempt to reach out for the screaming Holga, but the hand whisks her away before you can grab her. Eventually, your mind cracks against a god's might, and you fall to your knees, begging for it to stop. "DIE!" screams the God. But suddenly, you find strength and stand up. A mysterious power surges through you. Slowly, the God is pushed out of your mind. Before it leaves, you have one more message from it, whispered quietly in a voice you recognize as your own. "You will not be able to defy Cthulhu's might."

"NO! WHY DOES THIS HAPPEN TO ALL I MEET!" I yell, but I slowly calm down, and I now have a goal, "I will get Holga back! But first I need Items"

I search the store and see if the bodyguards are okay. I also go into deep concentration and cast Detect Magic 

The guards are fine, standing in front of the store like nothing happened. In the store, you find swords, shields, armor, and every kind of food and ale you could wish for. Casting a spell to find all sorts of eldritch magicks, you find a glowing sword above Holga's desk. However, nothing else seems to be magical.

I cringe slightly, but I take the sword. I look further into the weapon and food aisles

You cautiously take the sword and store it away, not wanting to break it. Searching through the food and weapons aisles, you find nothing that seems as interesting as the sword. A lot of food, beer, and bows, but really nothing else.  

I leave the store, filled with anger and rage and a mission. I say "Let's continue on," making it obvious that I am in a bad mood. I looked behind for a minute filled with sadness...and went back inside to pay, putting 4 gold inside the cash register. And immediately left after that.

The guards, surprised by your bad temper, keep marching, their metal boots making an irritating clank all the way down to the harbor, where you walk out onto a pier where a small boat is docked.

"Here's your boat," a guard says. "The Luna Rose. They've got some of the best sailors in the world with you here." 

As if on cue, about ten sailors jump out of the boat and stand, saluting you. "C'mon!" one shouts in a voice weathered by the sea. "Let's get away immediately." 

A woman dressed in a fancy uniform jumps out of the boat and walks up to you. "Hello, Sir Percentum," she says. "I'm Rosa Myroui, captain of the Luna Rose. This is going to be a hard trip- every monster in those seas is going to come after us once they realize what we're doing. But we'll get you through. Let's get started, and may the sea carry us to the morning sun!" With that, she calls to the sailors and marches back onto the boat. 

I sigh and follow her to the boat

You get on the boat. It's a large boat, surprisingly without sails. Captain Rosa catches you looking up and smiles. "The winds out there would kill us if we had sails. We're better off with a heavy boat that doesn't rock." It has a thin wooden roof above the deck, most likely to protect you from rain. A staircase leads downstairs, where Captain Rosa says the cabins are. "And in the bottom, there's a storage room," she says with a slight brogue, a sign that she grew up on the sea. And you're off. The rest of the day is smooth sailing. During the night, it gets a bit windy, but the moon is shining over the waters. You see some dolphins shooting through the water. And then you see a small island off in the distance, and on its sandy beach you see a wrecked ship that looks just like this one. And on the beach, you see a person in tattered clothes, gesturing for help.  

I grab a plank of wood from the reck and start paddling myself closer and closer while continuing to scream for help

Roll a Athletics check to see how far you make it. Captain Rosa sees you and the boat starts to slow down. 

I throw out a Rope, Hempen (50 feet) and yell, "Grab the rope!" I yell loudly, "Who are you, what happened!"

I attempt to look closer at the survivor.

Roll a Sleight of Hand check to see if the rope makes it to the survivor. Captain Rosa looks at you. "His boat most likely crashed," she says. "These islands are littered with monsters- one of them probably drew the boat in." And behind the survivor, a screech rips through the air. A harpy, silhouetted against the night sky, flies into the air behind the survivor and dives at his plank. 

Sleight of hand: 8

I knot the rope on a wood pillar that is on the ship, and I shoot a crossbow at the harpy

Attack: 18 Damage: 4

"Look out behind you!"

The rope misses by a few feet. You knot the rope quickly, and Captain Rosa helps, and then you shoot a bolt from your crossbow at the harpy. It hits one of the harpy's wings, and the harpy loses a bit of altitude, but doesn't fall into the waters below, staying at about twenty-five feet in the air- level with the deck of the ship. Then, it starts to sing. It's the most beautiful song you've ever heard. Roll a Wisdom saving throw to see if the song affects you. 

Wisdom saving throw: 13

I use Frostbite against the harpy

Harpy has to do a constitution saving throw that is 11. if missed...Damage: 2 and it has disadvantage.

Harpy saving throw: 12 
Roll initiative: Harpy's roll: 15

A white bolt of frost shoots out of your palm, aiming right for the harpy. However, the harpy dives out of the way, cackling, and then shoots towards you and pulls out a spiked wooden club and swings at you with it.

Attack: 16 Damage: 4

Initiative: 13

I grab the loose end of the Rope, Hempen (50 feet) and attempt to tie it around the harpy

Sleight of hand: 19

Then I stab with my javelin of lightning into the non-injured wing

Attack: 15 Damage: 6

I cut the harpy with a rapier 

Attact: 23 Damage: 6

Is the rapier a bonus action? I don't think that the Javelin has the light property. 

Anyway, the harpy smacks you with its club and laughs, pointing at you with a withered finger. Suddenly, you grab it and tie it up with a rope, then throw your Javelin of Lightning at the harpy. It screeches in pain as electricity flows through its body, but suddenly flies away, taking your javelin with it. 

The harpy's just going to use the Dash action to get as far away from you as possible.