diff --git a/src/idz/db/missions.ts b/src/idz/db/missions.ts
new file mode 100644
index 0000000..3d628b1
--- /dev/null
+++ b/src/idz/db/missions.ts
@@ -0,0 +1,83 @@
+import { Client } from "pg";
+import * as sql from "sql-bricks-postgres";
+
+import { _findProfile } from "./_util";
+import { ExtId } from "../model/base";
+import { MissionGrid, MissionState } from "../model/mission";
+import { Profile } from "../model/profile";
+import { FacetRepository } from "../repo";
+import { generateId, Id } from "../../db";
+
+export class SqlMissionsRepository implements FacetRepository<MissionState> {
+  constructor(private readonly _conn: Client) {}
+
+  private async _load(
+    extId: ExtId<Profile>
+  ): Promise<[MissionState, Id<Profile>]> {
+    const result: MissionState = {
+      team: new Array<MissionGrid>(),
+      solo: new Array<MissionGrid>(),
+    };
+
+    for (let i = 0; i < 5; i++) {
+      const soloGrid: MissionGrid = { cells: new Array<number>() };
+      const teamGrid: MissionGrid = { cells: new Array<number>() };
+
+      for (let j = 0; j < 9; j++) {
+        soloGrid.cells.push(0);
+        teamGrid.cells.push(0);
+      }
+    }
+
+    const profileId = await _findProfile(this._conn, extId);
+
+    const loadSoloSql = sql
+      .select("sm.*")
+      .from("idz.solo_mission_state sm")
+      .where("sm.profile_id", profileId)
+      .toParams();
+
+    const { rows } = await this._conn.query(loadSoloSql);
+
+    for (const row of rows) {
+      result.solo[row.grid_no].cells[row.cell_no] = row.value;
+    }
+
+    return [result, profileId];
+  }
+
+  async load(extId: ExtId<Profile>): Promise<MissionState> {
+    const [mission] = await this._load(extId);
+
+    return mission;
+  }
+
+  async save(extId: ExtId<Profile>, mission: MissionState): Promise<void> {
+    const [existing, profileId] = await this._load(extId);
+
+    for (let i = 0; i < mission.solo.length; i++) {
+      const exGrid = existing.solo[i].cells;
+      const grid = mission.solo[i].cells;
+
+      for (let j = 0; j < grid.length; j++) {
+        if (grid[j] === exGrid[j]) {
+          continue; // Most if not all cells are unaffected on save
+        }
+
+        const saveSql = sql
+          .insert("idz.mission_state", {
+            id: generateId(),
+            profile_id: profileId,
+            grid_no: i,
+            cell_no: j,
+            value: grid[j],
+          })
+          .onConflict("profile_id", "grid_no", "cell_no")
+          .doUpdate("value")
+          .toParams();
+
+        await this._conn.query(saveSql);
+      }
+    }
+  }
+}
diff --git a/src/idz/decoder/_mission.ts b/src/idz/decoder/_mission.ts
index 3470bf5..038b01d 100644
--- a/src/idz/decoder/_mission.ts
+++ b/src/idz/decoder/_mission.ts
@@ -4,7 +4,7 @@ export function mission(buf: Buffer): MissionGrid[] {
   const grids = new Array();
 
   for (let gridNo = 0; gridNo < 5; gridNo++) {
-    const grid: MissionGrid = { gridNo, cells: [] };
+    const grid: MissionGrid = { cells: [] };
 
     for (let cellNo = 0; cellNo < 9; cellNo++) {
       let cell = 0;
diff --git a/src/idz/encoder/_mission.ts b/src/idz/encoder/_mission.ts
index 5c64a97..b9fbd0f 100644
--- a/src/idz/encoder/_mission.ts
+++ b/src/idz/encoder/_mission.ts
@@ -3,8 +3,8 @@ import { MissionGrid } from "../model/mission";
 export function mission(grids: MissionGrid[]): Buffer {
   const buf = Buffer.alloc(0x24);
 
-  for (const grid of grids) {
-    const { gridNo } = grid;
+  for (let gridNo = 0; gridNo < grids.length; gridNo++) {
+    const grid = grids[gridNo];
     const slices = [0, 0, 0];
 
     for (let cellNo = 0; cellNo < 9 && cellNo < grid.cells.length; cellNo++) {
diff --git a/src/idz/model/mission.ts b/src/idz/model/mission.ts
index 61f5fe6..f981ceb 100644
--- a/src/idz/model/mission.ts
+++ b/src/idz/model/mission.ts
@@ -1,5 +1,4 @@
 export interface MissionGrid {
-  gridNo: number;
   cells: number[];
 }