SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
The world’s favorite blue hedgehog is back for a next-level adventure in SONIC THE HEDGEHOG 2. After settling in Green Hills, Sonic is eager to prove he has what it takes to be a true hero. His test comes when Dr. Robotnik returns, this time with a new partner, Knuckles, in search for an emerald that has the power to destroy civilizations. Sonic teams up with his own sidekick, Tails, and together they embark on a globe-trotting journey to find the emerald before it falls into the wrong hands.
SPOILERS AHEAD
Sonic the Hedgehog 2 Plot Summary and Synopsis
Several months after defeating Doctor Robotnik and being adopted by Tom and Maddie Wachowski as their son, Sonic the Hedgehog attempts to help the public as a vigilante to little success.
Tom advises Sonic to remain patient for the day his powers will be needed before he and Maddie depart for her sister Rachel’s wedding in Hawaii. Sonic plans to have fun while home alone, but is attacked by Robotnik, who has returned with the help of Knuckles the Echidna.
Knuckles desires to honor the legacy of his extinct tribe and demands the location of the legendary Master Emerald, an ancient relic that allows its possessor to bend reality to their will.
Sonic is rescued by Miles “Tails” Prower, a two-tailed fox who idolizes him and came to warn him about Knuckles.
Sonic convinces Tails to help him find the Master Emerald, while Robotnik reunites with his assistant Stone and, scheming to steal the emerald for himself, offers to help Knuckles in his own search. Sonic and Tails follow clues on a map from Sonic’s deceased guardian Longclaw to Siberia, where they find a compass within an old temple.
Robotnik and Knuckles track them and pursue Sonic and Tails down a mountain. During an ensuing avalanche, Robotnik and Knuckles steal the compass. Tom rescues Sonic and Tails by using a ring to teleport them to the wedding.
Rachel’s fiancé and his wedding guests reveal themselves as undercover agents of the Guardian Units of Nations (G.U.N.) and capture Sonic, Tails, and Tom. Maddie and Rachel work to rescue them while Robotnik and Knuckles find an underwater temple containing the Master Emerald.
Sonic goes to the temple and fights Knuckles, but Robotnik steals the emerald and leaves Knuckles to die with Sonic as the temple collapses. Sonic and Knuckles escape and agree to work together as Tails rescues them in a biplane. Robotnik absorbs the Master Emerald and becomes omnipotent.
In Green Hills, Robotnik destroys G.U.N.’s forces and creates a giant robot resembling himself. Sonic, Tails, and Knuckles work together to fight the robot and reclaim the Master Emerald, but it shatters, releasing the seven Chaos Emeralds.
Tom and Maddie rescue Sonic, who uses the Chaos Emeralds to transform into Super Sonic. He destroys the robot before dispersing the Emeralds and reverting back to normal. Knuckles restores the Master Emerald from the remaining shards and agrees to safeguard it with Sonic and Tails. The three resume an idyllic life with the Wachowskis.
Sonic the Hedgehog 2 Ending
Stone infiltrates G.U.N. as it begins searching for Robotnik in the mech’s rubble. An agent reports to G.U.N. Commander Walters that a 50-year-old file containing coordinates to a research facility, which houses Project Shadow, has been uncovered.
Source: Wikipedia (CC BY-SA 3.0).