- Guardians of the Galaxy
- Firestar / Ann-Gell (first appearance) (flashback and main story; origins) (joins S.H.I.E.L.D. Academy)
- Invisible Woman / Susan Storm
- Mar-Vell (first full appearance) (flashback and main story) (dies)
- Human Torch / Jim Hammond (first appearance) (flashback and main story) (joins S.H.I.E.L.D.)
- Captain Marvel / Carol Danvers
- Yon-Rogg (first full appearance) (flashback and main story)
- Ronan the Accuser (flashback and hologram only)
- Supreme Intelligence (mentioned only)
- Deathbird / Cal'syee Neramani (first appearance) (flashback and main story)
- Unnamed agents
- The Griffin (first appearance)
- Unnamed scientists
- Norman Osborn (mentioned only)
- Shi'ar Empire
- D'Ken Neramani (flashback only)
- Chancellor Vitana (single appearance; flashback only; deceased)
- Unnamed soldiers
- Human Torch / Johnny Storm (mentioned only)
Ann-Gell / Firestar, a humanoid alien with Pyrokinetic powers, is flying around in space before she descends to Earth. Mistaking her as an meteor threat, Oscorp scientists attempt to eliminate Firestar using the company's newly developed satellite weapon the "Sentinel 5", but Firestar dodges the shoots, destroys the satellite and successfully lands on Earth. She is greeted by Susan Storm / Invisible Woman, with whom she walks around until the two end up answering a distress call in New York about a Hydra squadron having unleashed a super soldier monster in the city. Meanwhile in another planet, Cal'syee Neramani, a former princess-turned-outcast of the Shi'ar Empire now known as Deathbird, is assaulting numerous gladiators, demanding answers about where "the daughter of the traitor" is.
In the streets of New York, the Guardians of the Galaxy (Nathan Quill / Star-Lord, Zoe Gillan / Gamora, Nebula, Cougar, Sebastian Allan / Rocket Raccoon, Drax the Destroyer and Groot) had recovered a Neuro-Cortex-powered flash-drive containing the consciousness of World War II soldier Jim Hammond from a group of Hydra agents sent to retrieve it, and their super solider the Griffin. The Guardians are aided by Invisible Woman and Firestar, who weaken the Griffin enough for Groot to open a Bifrost Bridge which engulfs the agents and the monster and teleports them to Jotunheim. While Nebula, Rocket and Groot go with Invisible Woman to discuss with S.H.I.E.L.D. agents about a what to do with Hammond's consciousness, Nathan and Zoe take Ann-Gell in for a trip around the city, on which the young alien enjoys the regular activities of normal human teenagers. Everything seems well until they are attacked by Deathbird, who intends to kill Ann-Gell "to end the traitor's bloodline". Star-Lord and Gamora suit up and they defeat Deathbird, who retreats when Carol Danvers / Captain Marvel arrives. Later on, Ann-Gell reveals that she is a Kree/Shi'ar hybrid, daughter of renegade Kree Mar-Vell and Shi'ar Senator Vitana; the two had fallen in love, given birth to Ann-Gell and sought to start a normal family life until Deathbird killed Vitana and exposed Mar-Vell's treachery against the Kree Empire, forcing him to flee in the cosmos. They also overhear from Danvers that the Kree captain Yon-Rogg has ordered his crew to work on a new weapon in a abandoned Oscorp facility; also programmed to kill Ann-Gell.
While Danvers searches for Yon-Rogg, who is away from Earth attacking the Shi'ar Empire and pursuing Mar-Vell, the Guardians head into the facility and discover an synthetic android and clone of Johnny Storm / Human Torch. Overhearing that the android requires a living mind to power it up, they neutralize the guards and scientists, reprogram the android and relocate Hammond's consciousness into it. Hammond awakens in his new body, but becomes terrified and confused at the changes on himself and everything around him, consequently destroying the facility with his new found powers, until Rocket (who reveals himself as Sergeant Allan) calms him down and begins explaining everything. Overhearing about her father battling Mar-Vell in the Shi'ar Empire's defense, Ann-Gell begins feeling sadly remorseful that her existence has brought on her mother's death and her father's exile, but she is soon comforted by Gamora, who shares sympathy with her as another alien who was sent away from her home-world by her parents for her safety and compliments that it was her father's former leaders who brought this on for their genocidal wars against other planets and their beliefs that only Kree should exist. Just then, they witness Mar-Vell and Yon-Rogg teleporting on Earth during their fight, and Deathbird, still bent to kill Ann-Gell, returning to attack everyone. Noticing the destroyed facility he sent his agents into, Yon-Rogg holds Deathbird responsible and attacks her, firing a concussive bolt which ricochets into Deathbird's armor and almost hits Ann-Gell until Mar-Vell shields her and takes the shot in her place.
As Yon-Rogg and Deathbird are taken into a fight by Hammond, Danvers and Invisible Woman, a wounded Mar-Vell urges a tearful Ann-Gell to live free before dying and disintegrating in her arms as his remaining energies are transferred to her body. Yon-Rogg subdues Hammond and attempts to remove his consciousness from his android body until an enraged Ann-Gell (with her Pyrokinetic powers boosted and upgraded) conjures fiery constructs to severely injure Yon-Rogg and overheat Deathbird's armor, but before she can finish both off, she is calmed down and comforted by Star-Lord and Gamora, as Deathbird yields and is incarcerated in Kyln prison and Yon-Rogg is teleported back to Hala by Ronan to face trial by the Supreme Intelligence for his manslaughter of Mar-Vell, who is revealed to have been cleared out of his past accusations. Following Mar-Vell's funeral, Hammond is accepted as a member of S.H.I.E.L.D. under Dum Dum Dugan's supervision, as Yondu tells the group that the news of Mar-Vell's death have broken other planet's peace treaty with the Kree Empire, branding the pure-blood Kree as public enemies to the galaxy. With her father gone, Ann-Gell feels like she has no place in either the Shi'ar Empire or Hala, until Danvers states that she still has a home in Pegasus Z like all other homeless metahumans since Ann-Gell is only half-blood Kree, and Ann-Gell accepts. Next day, Nathan and Zoe go with Invisible Woman to see Ann-Gell, who had enrolled as a new student in S.H.I.E.L.D. Academy out of her need for personal education if she wants to adapt to her new life on Earth. Susan compliments that this is something Mar-Vell would have wanted, and that he would be proud of his daughter.
- Scott Menville as Star-Lord / Nathan Quill
- Laura Bailey as Gamora / Zoe Gillan
- Sofia Carson as Firestar / Ann-Gell
- Troy Baker as Rocket Raccoon / Sebastian Allan
- Travis Willingham as Groot, Mar-Vell
- Erica Lindbeck as Nebula
- William Salyers as Yondu Udonta
- Jason Marsden as Human Torch / Jim Hammond
- Catherine Taber as Invisible Woman / Susan Storm
- Jennifer Hale as Captain Marvel / Carol Danvers
- Nika Futterman as Deathbird / Cal'syee Neramani, Minn-Erva
- Fred Tatasciore as Yon-Rogg, Dum Dum Dugan
- Jonathan Adams as Ronan the Accuser
- Dee Bradley Baker as Oscorp head scientist, Hydra agents
- The title is a reference to a 1979 song by Donna Summer from Bad Girls.
- "Any Way You Want It" by Journey
- ↑ enrolled in S.H.I.E.L.D. Academy since episode Daughters' Day
- ↑ mentioned in a few occasions in the episode: first when a scientist mistakes Firestar (in her fiery comet form) for Human Torch, until Invisible Woman confirms this wrong: "That's not Johnny. His powers don't work in outer space."
- ↑ as revealed in previous episode