Dreams of Conquest is Ishikawa Tale 5 of 9 and the first of his Act 2 tales, starting at the Akashima Survivor Camp. You rescue a pinned-down Ishikawa and raid Tomoe's archer training camp for clues. It needs A New Horizon done and rewards the Charm of Precision and 2 Silk.
Part 5 of 9 in Ishikawa's Tales
Part 18 of 66 in Tales of Tsushima
Ishikawa is not at the camp. A peasant says he rode east toward the coast. You find him wounded and pinned down by Mongol archers. Beat the first group, then hold off a second wave while he patches himself up. Ride with him to Tomoe's last known spot, a training camp, passing bodies her archers used for target practice. Clear the camp and search it.
Go to the Akashima camp. Search east of it for Ishikawa. Beat the Mongols around him and talk. Beat the second wave of archers and talk again. Ride with him to Tomoe's camp, scout it and clear it. Search the camp for clues.
On the ride, Ishikawa explains why he and Tomoe split before the invasion. She passed his teachings on to a band of assassins, and he tried to kill her for it. He says he will be the one to finish her. In the camp Jin finds a letter in which Tomoe promises the Khan the heads of Jin and Ishikawa. Jin asks whether the sensei can really do it, and he insists he can.
Laid to Rest
Laid to Rest is Ishikawa Tale 9 of 9, the Act 3 finale of his storyline. You team up with Tomoe and Ishikawa to stop a surprise Mongol attack on Umugi Cove. It rewards the Charm of Precision, the Midnight Shark half bow dye and the Shattered Mask of Tomoe.
The Past Never Passes
The Past Never Passes is Ishikawa Tale 3 of 9, an Act 1 side tale in Hiyoshi. Tomoe's archers have ringed Hiyoshi Springs ahead of a Mongol attack, and you scout the area with Ishikawa and clear bridges along the coast. It rewards the Charm of Precision and 2 Silk.
The Ghost and the Demon Sensei
The Ghost and the Demon Sensei is Ishikawa Tale 6 of 9, an Act 2 side tale near Kawamata Village in Kushi. Tomoe has framed you and Ishikawa for killing travelers, and you hunt for her Kushi training camp. It rewards the Charm of Swift Return and 2 Silk.
The Terror of Otsuna
The Terror of Otsuna is Ishikawa Tale 7 of 9, the last of his Act 2 tales, where you hit Tomoe's Otsuna training camp and finally see her face to face. It starts west of Old Toyotama Hills and rewards the Charm of Efficiency and 2 Silk.