diff --git a/asm/pokenav.s b/asm/pokenav.s
index 2d7981f10..3f09a5905 100644
--- a/asm/pokenav.s
+++ b/asm/pokenav.s
@@ -5,146 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_81C742C
-sub_81C742C: @ 81C742C
-	push {r4-r7,lr}
-	lsls r0, 24
-	lsrs r0, 24
-	lsls r1, r0, 2
-	adds r1, r0
-	lsls r1, 3
-	ldr r0, =gTasks + 0x8
-	adds r7, r1, r0
-	movs r1, 0
-	ldrsh r0, [r7, r1]
-	cmp r0, 0x5
-	bls _081C7446
-	b _081C7562
-_081C7446:
-	lsls r0, 2
-	ldr r1, =_081C7458
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.pool
-	.align 2, 0
-_081C7458:
-	.4byte _081C7470
-	.4byte _081C747A
-	.4byte _081C7490
-	.4byte _081C749C
-	.4byte _081C751E
-	.4byte _081C752C
-_081C7470:
-	bl sub_81C76C4
-	movs r0, 0x1
-	strh r0, [r7]
-	b _081C7562
-_081C747A:
-	bl sub_81C76FC
-	cmp r0, 0
-	bne _081C7562
-	ldr r0, =0x000186a0
-	bl sub_81C756C
-	b _081C74E8
-	.pool
-_081C7490:
-	bl sub_81C786C
-	cmp r0, 0
-	bne _081C7562
-	movs r0, 0x3
-	strh r0, [r7]
-_081C749C:
-	bl sub_81C75E0
-	adds r6, r0, 0
-	movs r0, 0x1
-	negs r0, r0
-	cmp r6, r0
-	beq _081C74FC
-	ldr r0, =0x0001869f
-	cmp r6, r0
-	bls _081C7506
-	ldr r4, =gUnknown_0861F3EC
-	ldr r5, =gUnknown_0203CF40
-	ldr r0, [r5]
-	ldr r1, [r0, 0x4]
-	lsls r0, r1, 3
-	subs r0, r1
-	lsls r0, 2
-	adds r1, r4, 0
-	adds r1, 0x18
-	adds r0, r1
-	ldr r0, [r0]
-	bl _call_via_r0
-	ldr r0, [r5]
-	ldr r1, [r0, 0x4]
-	lsls r0, r1, 3
-	subs r0, r1
-	lsls r0, 2
-	adds r4, 0x14
-	adds r0, r4
-	ldr r0, [r0]
-	bl _call_via_r0
-	adds r0, r6, 0
-	bl sub_81C756C
-	cmp r0, 0
-	beq _081C74FC
-_081C74E8:
-	movs r0, 0x4
-	strh r0, [r7]
-	b _081C7562
-	.pool
-_081C74FC:
-	bl sub_81C7710
-	movs r0, 0x5
-	strh r0, [r7]
-	b _081C7562
-_081C7506:
-	cmp r6, 0
-	beq _081C7562
-	adds r0, r6, 0
-	bl sub_81C7850
-	bl sub_81C786C
-	cmp r0, 0
-	beq _081C7562
-	movs r0, 0x2
-	strh r0, [r7]
-	b _081C7562
-_081C751E:
-	bl sub_81C75D4
-	cmp r0, 0
-	bne _081C7562
-	movs r0, 0x3
-	strh r0, [r7]
-	b _081C7562
-_081C752C:
-	bl sub_81C7738
-	cmp r0, 0
-	bne _081C7562
-	ldr r0, =gUnknown_0203CF40
-	ldr r0, [r0]
-	ldrh r0, [r0, 0x8]
-	negs r4, r0
-	orrs r4, r0
-	lsrs r4, 31
-	bl sub_81C9430
-	bl sub_81C7334
-	cmp r4, 0
-	beq _081C755C
-	ldr r0, =CB2_ReturnToFieldContinueScriptPlayMapMusic
-	bl SetMainCallback2
-	b _081C7562
-	.pool
-_081C755C:
-	ldr r0, =CB2_ReturnToFieldWithOpenMenu
-	bl SetMainCallback2
-_081C7562:
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_81C742C
-
 	thumb_func_start sub_81C756C
 sub_81C756C: @ 81C756C
 	push {r4-r6,lr}
diff --git a/src/pokenav_main.c b/src/pokenav_main.c
index bd57d6e05..e75ae38f3 100644
--- a/src/pokenav_main.c
+++ b/src/pokenav_main.c
@@ -8,25 +8,41 @@
 #include "pokemon_storage_system.h"
 
 struct UnknownStruct_0203CF40 {
-	u32 field_0;
-	u32 field_1;
-	u16 field_2;
-	u32 field_3;
-	u32 field_4;
-	u32 field_5[18];
+	u32 field0;
+	u32 field4;
+	u16 field8;
+	u32 fieldC;
+	u32 field10;
+	u32 field14[18];
+};
+
+struct UnknownStruct_0861F3EC {
+	void (*data[7])(void);
 };
 
 extern struct UnknownStruct_0203CF40 *gUnknown_0203CF40;
 extern u8 gUnknown_0203CF3C;
+extern struct UnknownStruct_0861F3EC gUnknown_0861F3EC[7]; // Unknown size; at least 7.
 
-extern void sub_81C742C(u8 taskId);
-extern void sub_81C7400(void);
-extern void sub_81C7418(void);
-extern void sub_81C7170(u8 a0);
-extern void sub_81C71E4(u8 a0);
 extern void sub_81C7650(s32 a0);
-extern u32 AnyMonHasRibbon(void);
+extern void sub_81C76C4(void);
+extern void sub_81C7710(void);
+extern void sub_81C7850(u32 a0);
+extern void sub_81C9430(void);
+extern u32 sub_81C756C(u32 a0);
+extern u32 sub_81C76FC(void);
+extern u32 sub_81C786C(void);
+extern u32 sub_81C75E0(void);
+extern u32 sub_81C75D4(void);
+extern u32 sub_81C7738(void);
 
+u32 AnyMonHasRibbon(void);
+void sub_81C7334(void);
+void sub_81C71E4(u8 a0);
+void sub_81C7170(u8 a0);
+void sub_81C7418(void);
+void sub_81C7400(void);
+void sub_81C742C(u8 taskId);
 void sub_81C72BC(void);
 void sub_81C7360(struct UnknownStruct_0203CF40 *a0);
 
@@ -165,7 +181,7 @@ void sub_81C72BC() {
 			SetMainCallback2(CB2_ReturnToFieldContinueScriptPlayMapMusic);
 		} else {
 			sub_81C7360(gUnknown_0203CF40);
-			gUnknown_0203CF40->field_2 = 1;
+			gUnknown_0203CF40->field8 = 1;
 			ResetTasks();
 			ResetSpriteData();
 			FreeAllSpritePalettes();
@@ -196,15 +212,15 @@ void sub_81C7360(struct UnknownStruct_0203CF40 *a0) {
 
 	fill = 0;
 	i = 18;
-	arrayPtr = &(a0->field_5[17]);
+	arrayPtr = &(a0->field14[17]);
 	for (i; i >= 0; i--) {
 		*arrayPtr = fill;
 		arrayPtr -= 1;
 	}
-	a0->field_2 = 0;
-	a0->field_1 = 0;
-	a0->field_3 = AnyMonHasRibbon();
-	a0->field_0 = 0;
+	a0->field8 = 0;
+	a0->field4 = 0;
+	a0->fieldC = AnyMonHasRibbon();
+	a0->field0 = 0;
 }
 
 bool32 AnyMonHasRibbon() {
@@ -244,4 +260,68 @@ void sub_81C7418() {
 	TransferPlttBuffer();
 	LoadOam();
 	ProcessSpriteCopyRequests();
+}
+
+void sub_81C742C(u8 taskId) {
+	s16* dataPtr;
+	u32 v1;
+	bool32 v2;
+
+	dataPtr = gTasks[taskId].data;
+
+	switch (dataPtr[0]) {
+	case 0:
+		sub_81C76C4();
+		dataPtr[0] = 1;
+		break;
+	case 1:
+		if (sub_81C76FC()) {
+			break;
+		}
+		sub_81C756C(0x186a0);
+		dataPtr[0] = 4;
+		break;
+	case 2:
+		if (sub_81C786C()) {
+			break;
+		}
+		dataPtr[0] = 3;
+	case 3:
+		v1 = sub_81C75E0();
+		if (v1 == -1) {
+			sub_81C7710();
+			dataPtr[0] = 5;
+		} else if (v1 > 0x1869F) {
+			gUnknown_0861F3EC[gUnknown_0203CF40->field4].data[6]();
+			gUnknown_0861F3EC[gUnknown_0203CF40->field4].data[5]();
+			if (sub_81C756C(v1)) {
+				dataPtr[0] = 4;
+			} else {
+				sub_81C7710();
+				dataPtr[0] = 5;
+			}
+		} else if (v1 != 0) {
+			sub_81C7850(v1);
+			if (sub_81C786C()) {
+				dataPtr[0] = 2;
+			}
+		}
+		break;
+	case 4:
+		if (!sub_81C75D4()) {
+			dataPtr[0] = 3;
+		}
+		break;
+	case 5:
+		if (!sub_81C7738()) {
+			v2 = gUnknown_0203CF40->field8 != 0;
+			sub_81C9430();
+			sub_81C7334();
+			if (v2) {
+				SetMainCallback2(CB2_ReturnToFieldContinueScriptPlayMapMusic);
+			} else {
+				SetMainCallback2(CB2_ReturnToFieldWithOpenMenu);
+			}
+		}
+	}
 }
\ No newline at end of file