Hiro chased the cable car as it headed downhill. "Hey! Hold up! Stop!" he yelled. But by the time Hiro reached it, Baymax had hopped off.

Hiro glanced in stores and down streets. He searched everywhere before finally looking up. A puffy white figure strolled along the edge of the elevated train tracks. Hiro gasped as a train rushed past and almost knocked the robot off of the ledge. "Baymax!" he shouted, but he had lost him again.

He continued to follow the sounds of traffic chaos, knowing it was probably Baymax who was causing the commotion.

Hiro was almost out of breath. He stopped and took a look around. He'd been too focused on Baymax to notice, but now he realized he was in a run-down, industrial part of town. Everything looked dark and abandoned.

Then he saw Baymax! He was standing outside a grimy old warehouse.

"Baymax!" Hiro shouted. "Are you crazy? What are you doing?"

Baymax held up the glass petri dish. "I have found out where your tiny robot wants to go."

Hiro looked at the petri dish. The microbot was really banging against the dish in the direction of the warehouse. Hiro had thought the microbot was malfunctioning, but now he had to consider the possibility that maybe it wasn't.

Even so, how could he get into the warehouse? He ran to a metal door and pulled on it, but just as he had expected, it was locked.

"There's a window," Baymax said, pointing to an upper story.

Moments later, Hiro was standing on Baymax's giant head. "Please exercise caution," Baymax warned as Hiro partially deflated the robot's head with the weight of his feet. "A fall from this height could lead to bodily harm."

Hiro climbed through the window and into the warehouse. In the dim light, all he could see were oil drums on a lower level.

"Oh, no."

At Baymax's declaration, Hiro looked back. He saw that the robot had gotten stuck trying to get through the window.

Baymax suddenly made a rude noise. "Excuse me," the robot said, "while I let out some air."

"Uh, okay." Hiro understood that to fit through the window, Baymax had to deflate a bit, but the sound was really obnoxious—and loud. "Are you done?" Hiro whispered.

"Yes," Baymax replied, and Hiro pulled him through. "It will take me a moment to reinflate."

"Fine," Hiro said, rolling his eyes. "Just keep it down."

Leaving Baymax behind to inflate, Hiro nervously went down a flight of creaky stairs. As he passed a row of oil drums, he thought he heard a low drone. "Hello?" he asked, but no one answered. He grabbed a broom.

Hiro turned a corner and saw a sealed-off area in the middle of the warehouse, covered with tarps. He crept closer and peeked inside. He was shocked to see a large machine manufacturing ... Could it be? ... Yes! Microbots! Lots of them. They were being spit out by the machine onto a conveyer belt.

"My microbots?" Hiro whispered. "Someone's making more."

"Hiro," a voice suddenly said.

"GAH!" Hiro gasped and turned around. It was only Baymax. "You gave me a heart attack!"

Baymax nodded and waddled closer. "My hands are equipped with defibrillators. Clear," he said as he rubbed his hands together and held them up to Hiro's chest, ready to shock his heart into a normal rhythm.

"Stop! It's just an expression!" Hiro said, and he walked over to one of the oil drums. He opened the lid and looked inside. It was filled with microbots. He looked up and down the aisle and realized that all the drums in the huge warehouse were filled with microbots!

Suddenly, the microbot in Hiro's petri dish started to shake, this time banging the petri dish on all sides.

"Oh, no," Baymax said again as a low, angry buzz rose from the oil drums all around them. The thousands of microbots rose out of the drums in a menacing swarm and headed toward Hiro and Baymax.

Hiro gave Baymax a look of terror and yelled, "Run!"

小宏追着正要下坡的电缆车。“嘿！停车！停车！”他大喊着。可当小宏追到那里的时候，大白已经离开了。”

小宏一边扫视着沿路的商店，一边继续沿路向前。他仔细搜寻着每一处，直到他看到了大白的身影。一个胖胖的白色身影正沿着高架铁轨缓步前行。当看见一辆火车呼啸而过，差点把这个机器人撞出高架时，小宏倒吸了一口气。“大白！”他喊道，可他随即又弄丢了大白。

他继续跟着车辆发出的混乱声追寻着，他知道这些骚动很可能是大白造成的。

小宏紧张得几乎窒息。他停住脚步四处寻望着。他一直过于关注大白的踪影忘记了自己的方向，直到现在他才意识到自己已身处一处破败的工业区内。所有东西都看似陈旧废弃。

随即他看见了大白！他正站在一处脏兮兮的仓库门前。

“大白！”小宏喊道，“你疯了吗？你在干什么？”

大白捧着培养皿说道：“我已经找到你的微型机器人想去的地方了。”

小宏看着培养皿。微型机器人碰撞着培养皿内壁的方向正指向旧仓库。小宏原本以为微型机器人出故障了，可是现在他感觉微型机器人或许并没有问题。

即便如此，他怎样才能进入仓库呢？他跑到金属门前用力地拉着，可是正如他预料的那样，门是锁起来的。

“那有扇窗户，”大白指着楼上说道。

片刻后，小宏站在了大白的大脑袋上。“请注意安全。”在大白警示着小宏时，小宏的重量有些将机器人的头压扁了。“从这个高度摔下来可能会对身体造成伤害。”

小宏穿过窗户进入了旧仓库。在昏暗的灯光中，所能看到的只有位于楼下的一些油桶。

“哦，不。”

听到大白的声音，小宏回头一看，发现正试图穿过窗子的大白被卡在了那里。

大白突然发出了很不雅的声音。“不好意思，”他说道，“我得放点气出来。”

“呃，好吧。”小宏知道为了能穿过窗子，大白需要放些气出来，可是这声音听起来真的不怎么好听而且很响。“你好了吗？”小宏低声地问道。

“好了，”大白回答道，小宏把他拖了进来。“给我点时间重新充气。”

“好，”小宏转动着眼睛说道，“只要小点声就好。”

小宏没有等正在充气的大白，他紧张地走下一段嘎吱作响的楼梯。在走过一排油桶时，他感觉自己好像听到了低沉的嗡嗡声。“有人吗？”他问道，但是没人回答。他抓起一把扫帚。

小宏转了个弯，看见仓库中央有一块用防水布遮盖着封闭区域，他悄悄地走近，偷偷地看向里面。让他震惊的是，他看到了一台巨大的机器正在制造……是真的吗？是的！微型机器人！大量的微型机器人。从机器中不断制造出的微型机器人被放置在了传送带上。

“我的微型机器人？”小宏低语道，“有人正在大批量制造。”

“小宏，”一个声音突然响起。

“啊！”小宏吸了口气转过身来，原来是大白。“差点被你吓出心脏病！”

大白点点头，摇摆着身体走近他。“我的双手装有除颤器。离手！”他一边说一边搓着他的手，然后举起手靠近小宏的胸部，想要通过电击把他的心率调回正常水平。

“别！我只是打个比方！”小宏说完便走到了一个油桶前。他打开盖子向里面望去，发现里面装满了微型机器人。他打量了一下那条通道，意识到仓库里所有的油桶中都装满了微型机器人。

突然，小宏培养皿里的微型机器人开始振动，这次是朝着各个方向冲撞培养皿。

“哦，不。”大白又一次说这话的时候，他们四周的油桶中发出了低沉的、愤恨的嗡嗡声。数以千计的微型机器人从油桶中升起，一大群可怕的微型机器人朝着小宏和大白蜂拥过来。

小宏朝大白露出惊恐的表情，大喊道：“快跑！”