Serge is just a regular kid, born in Arni village in year 1003, around
the same time as Lucca & co. start the orphanage in which Kid is also
adopted.
In 1006, when Serge was 3 years old, he was attacked by a panther demon,
and fatally injured.
His father,
Wazuki, was desperate for help, and seeked the Sage of Marbule
for ways of saving his son. However, due to a heavy storm (caused by Schala),
he landed in Chronopolis instead.
In Chronopolis, Serge got recognized by the Prometheus circuit, which
granted Serge the only access in the universe to the Frozen flame;
and the Frozen flame, which healed him instantly.
Four years later, at the age of 9, a tsunami strikes, and Serge drowns and dies.
However, due to (older) Kid arriving from the future to save Serge, a new parallel
universe was created where Serge was saved. However, in this parallel universe,
Chronopolis gets intermingled with several timelines and becomes a dysfunctional
Dead Sea, and hence cannot control the events of this world.
Ten years later, Serge meets with Leena on the Opassa beach for talking
about their future together, when (older) Kid pulls him through to the
original dimension (Another World), where he is dead.
However, because FATE (as Lynx) had predicted that such event will happen,
he had already sent the dragoon Karsh and his underlings to capture Serge
and bring him to Lynx. Due to the interference by (younger) Kid, their
attempt failed, and Serge could roam free.
However, eventually Serge sought Lynx by his own, due to (not subtle)
persuation from (younger) Kid, who still had traumas from Lynx's actions
in the orphanage where they had tried to capture Lucca from.
Serge confronts Lynx in the dragonian temple atop Mount Pyre,
where Lynx had brought the dragonian artifact Dragon Tear.
As Serge stares to the Dragon Tear, still confused by Lynx's words inciding
doubt of his own being, he is overwhelmed by the arficats power and his mind
and Lynx's mind get swapped: FATE (Lynx) ends in Serge's body, and Serge ends
in Lynx's body.
As FATE has no longer use for Serge (as Lynx),
he sends him into a dimensional vortex.
In the dimensional vortex, Serge (as Lynx) confronts Sprigg, an inhabitant
of that vortex, and Harle, who had came looking for Serge (as it was not
her best interests to have FATE in control of the Frozen flame again,
and she wants it for herself).
Serge goes to the Dead Sea, only to find that the FATE in that world
is dysfunctional, and that the Frozen flame is destroyed as FATE of
Another World (somehow?) decides not to give access to Serge & co.
after they kill the Flame's guardian, Miguel. Dead Sea is destroyed.
Serge & co. are rescued by the Sky Dragon, who also wishes to have
FATE destroyed, and hints them of their next move.
As the Frozen flame is now destroyed, Serge is able to travel back
to the Another world, where he gets promised the Dragon Tear if he
beats all the six dragons.
Serge proceeds to beat the six dragons, and acquires both Tears of Dragon.
Meanwhile, Harle sees that her plan isn't going to involve Serge anymore,
and goes away.
Serge goes goes to Mount Pyre yet again and stares into the tear.
The power of the Tear literally rebirths Serge from a single cell
into the body he had before FATE took it.
After that, Serge goes to Chronopolis to kill DarkSerge (FATE)
who is clearly evil. FATE has been entertaining her life as a human,
and wishes to learn more. A battle ensues, and FATE is killed.
The six dragons are now free from their control by FATE, and
reunite and steal the Frozen Flame. The Dinopolis arises from
the sea.
Serge, getting acquianted with the Dragon God's plan to massacre the entire
human world as a retribution for their sins to the planet, does not
want the Dragon God to succeed in that, and goes to beat him. On route,
he learns of the Elements of nature, and meets with Belthasar, who has
been preserving a special nook of timespace for the sole purpose of
meeting with him and doing some plot exposition.
Serge & co. beat the Dragon God (who somehow had been corrupted
or assimilated by Time Devourer huh?), and now all that remains,
is to free Schala of Lavos's control.
To do that, Serge goes and merges the Dragon Tears into a Chrono Cross,
which is a musical resonator or something that can restore Schala into
herself and destroy Lavos for good, when a certain sequence of elements
is activated in succession.
Kid is
Schala's Lavos-free daughter-clone, created so that she can work
out a way to save Schala from succumbing to Lavos and destroying all of
life and time.
She was "born" around the same time Serge was (1003), and adopted
and raised by Lucca Ashtear in her orphanage. When Harle and Lynx
invade in 1006, the orphanage burns and Kid has no choice but to
set out her own way of living. She becomes a bandit who vows to
avenge Lynx for killing Lucca.
In 1017, Kid meets with
Serge who has just travelled across dimensions,
and sets out to journey with him. She hopes his paths will lead her
to Lynx (and the rumoured priceless Frozen flame artifact).
She eventually meets
Lynx, but things don't go as she planned, and she
is mortally poisoned. She survives, and continues her journey of avenging
Lynx. Atop the Mount Pyre, she meets Lynx, but unfortunately, she is
deceived as Serge and Lynx swap bodies. As FATE (Serge) urges her to
kill Serge (Lynx), she hesitates because something is wrong, and then
FATE (DarkSerge) stabs her in a dramatic fashion.
As she recuperates, she has no memory of the incident, and continues
going with Serge (who is really FATE), still set on killing Lynx
(though Lynx is Serge now.)
She does not get a chance to kill Lynx's body, but she
meets Serge again in Chronopolis, as FATE fights her final battle.
When FATE dies, Kid awakens briefly, and is confused what to do.
She falls into a coma, one which he awakens from only
when Serge uses the power of the Masamune to revisit
her past and thwart off Lynx's and Harle's attempt to
snatch Lucca.
Right prior to the destruction of Lavos, she is informed
about her role in
Project Kid.
Wazuki is
Serge's father.
When Serge was mortally injured by a panther demon, he set out
on sail together with Leena's father, Miguel, to meet the Sage
of Marbule who could supposedly heal the kid.
However, due to a storm, they arrive in
Chronopolis instead.
in Chronopolis, Serge makes contact with the Frozen flame,
is instantly healed, and Wazuki is assimilated by
FATE.
Miguel stays behind in the chaotic turn of events, and Wazuki
gets safely home along with Serge.
In the passage of months, FATE takes control of Wazuki's shocked
mind, and turns his appearance into child Serge's worst fear,
a large feline. FATE, now as Lynx, sets out to find ways to
control the Frozen flame again, and joins temporarily forces
with
Harle, who has similar goals.