Somewhere in the canyons of Seaside Island, Tails is having a good old flight on his plane. All of a sudden, Knuckles comes up soaring beside him, confusing the fox as to how he got there. Ultimately, the truth quickly comes out as the echidna happens to be parasailing while being towed by Sonic, and is enjoying the ride even while he bumps against the canyon walls, right up until he flies headfirst into a rock formation, stopping both him and Sonic. They discover that the formation is actually a rock monster, who reacts violently upon being disrupted from its sleep. Knuckles and Tails fight the giant to no avail and the latter's plane is damaged as it is swatted away, all while the giant runs off with Sonic in pursuit.
In the countryside, the giant kicks a boulder which endangers Fastidious Beaver, whom Sonic swiftly rescues. Amy and Sticks then head over to Sonic and Knuckles, the former of whom explains the situation. Amy recognizes the giant as a "Granifer Giganticus", while Tails eventually crash-lands next to the team, his plane now in pieces. With everyone gathered, Amy sheds some light on the giant: it is a member of a proud race of mountain-dwellers from the time of the Ancients, which have not been sighted for centuries. However, Dr. Eggman, Orbot, and Cubot are also observing it from within the former's lair. Impressed by the giant's destructive capabilities, Eggman plots to make him his minion, and orders Orbot and Cubot to capture it. After watching the giant for a bit longer, Tails notes how its behavior seems to mimic his neighbor's uncle Tannous when he suffers from insomnia. This causes Sonic to deduce that the giant is just trying to go back to sleep. The giant then leaves the village, but a concerned Team Sonic follows it to help it return to its slumber.
As the giant returns to the canyon, Amy comes up with the idea of singing it a lullaby, though her attempt only drives it away. Sticks then gives it a go, with incomprehensible singing that grates her team's ears... yet makes the giant doze off. When the gang find out that the giant is now blocking the village's deli product delivery route, Sonic and Sticks lure it to a more secluded area, only for Eggman to arrive in his Eggmobile and summon his Bee Bots to capture the giant. The robots trap it in a honeycomb cage, but it quickly breaks out. Unwilling to let Eggman take the giant (which Sonic dubs "Rocky"), Team Sonic destroy several Bee Bots before Sonic lures the swarm right at Eggman, forcing him to retreat. With Eggman gone, Sonic tells Sticks to sing the rock monster back to sleep, yet the two are gone. Believing that the rock monster captured Sticks, the gang run off to rescue her... unaware that the rock monster was camouflaged nearby. With Sticks in his clutches, he climbs up one of the canyon's peaks.
After a thorough search, Team Sonic gather at Tails' Workshop yielding no results. Just then, Tails' Disasterometer detects Sticks being forced to sing for Rocky, much to everyone's dismay. The invention pinpoints her location, to which Sonic notes would be difficult to reach since Tails' plane is destroyed, so Amy suggests they find another way; but to her dismay, Sonic has them parasail as he tows them along. The team find the rock monster, and Amy and Knuckles pull Sticks from his grasp. Enraged, the rock monster gives chase, but Sonic reassures his team that he has a plan; to Eggman's lair. There, Eggman is working on his topiary within his meditation garden to cope with his recent failure to capture the rock monster as Team Sonic enters and brings the rock monster, who promptly levels the garden. Tails then takes out his Disasterometer and has it play a looped recording of Sticks' singing, which lulls the rock monster into sleep. Eggman asks for how long he has to put up with the recording, and Amy states that it takes approximately a year for a Granifer Giganticus to fall properly asleep. He accepts this to prevent any more collateral damage to his lair, allowing the gang to parasail back home while Eggman opts to rebuild his garden on top of the rock monster.
Tropes:
- The Cuckoolander Was Right: Sticks' horrific singing surprisingly happens to be what the rock monster needs to go to sleep.
- Didn't Think This Through: Eggman sends his Bee Bots to attack the rock monster, but Team Sonic manage to direct them back to him, forcing an instant retreat.
- Exactly What It Says on the Tin: The boys accidentally wake a sleeping rock monster from its slumber, thus setting the breakdown of this episode.
- Sonic also pulls this off when he rescues Fastidious Beaver:
Fastidious Beaver: But I already had the lemons... - Hollywood Tone-Deaf: Amy fails to lure the rock monster to sleep, so Sticks gives it a shot. Let's just say that the rock monster actually likes it, and would have her do it to him again. The rest of Team Sonic, however... well, just watch and listen.Knuckles: That's not a lullaby! That's what happens when I drop bagpipes into a woodchipper.
- A shout-out must go to Nika Futterman (Sticks' voice actress) here; she actually does an amazing job at pulling off such horrific, ear-destroying singing.
- How Did That Get in There?: Tails' initial reaction to Knuckles parasailing up beside him at the start of the episode.
- Shout-Out: The end of this episode makes a nice callback to an earlier episode of the show:Eggman: Cubot, Orbot, bring me potting soil; evil potting soil...
